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Akoum N, Mekhael M, Bisbal F, Wazni O, McGann C, Lee H, Bardsley T, Greene T, Dean JM, Dagher L, Kholmovski E, Mansour M, Marchlinski F, Wilber D, Hindricks G, Mahnkopf C, Wells D, Jaïs P, Sanders P, Brachmann J, Bax JJ, Morrison-de Boer L, Deneke T, Calkins H, Sohns C, Marrouche N, DECAAF II investigators. Lesion delivery and scar formation in catheter ablation for atrial fibrillation: The DECAAF II trial. Heart Rhythm 2025; 22:1384-1393. [PMID: 39245248 DOI: 10.1016/j.hrthm.2024.08.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 08/27/2024] [Accepted: 08/29/2024] [Indexed: 09/10/2024]
Abstract
BACKGROUND The Efficacy of Delayed Enhancement MRI-Guided Fibrosis Ablation vs Conventional Catheter Ablation of Atrial Fibrillation randomized trial showed no difference in atrial fibrillation (AF) recurrence with additional delayed enhancement magnetic resonance imaging (DE-MRI) fibrosis-targeted ablation to pulmonary vein isolation (PVI) in persistent AF. OBJECTIVE We evaluated the effect of lesion delivery on ablation-induced scarring and AF recurrence. METHODS Lesions delivered, targeting fibrotic and nonfibrotic areas identified from preablation DE-MRI, were studied in relation to ablation-induced scarring on 3-month DE-MRI, including their association with arrhythmia recurrence. RESULTS A total of 593 patients treated with radiofrequency were analyzed: 293 (49.4%) underwent PVI and 300 (50.6%) underwent additional fibrosis-guided ablation. Lesion analysis showed that 80.9% in the MRI fibrosis-guided group vs 16.5% in the PVI group (P < .001) had ≥40% of baseline fibrosis targeted. MRI assessment of ablation-induced scar showed that 44.8% of fibrosis-guided ablation and 15.5% of PVI had ≥40% of their fibrosis covered by scar (P < .001), demonstrating significant attenuation from lesions delivered to scar formed. In the overall population, fibrosis coverage with scar was not associated with recurrence (hazard ratio [HR] 0.90; 95% confidence interval [CI] 0.80-1.01; P = .08 per 20% increase). In patients with baseline fibrosis < 20%, fibrosis coverage with scar was associated with lower recurrence than PVI (HR 0.85; 95% CI 0.73-0.97; P = .03), whereas the association was not significant when baseline fibrosis ≥ 20% (HR 0.97; 95% CI 0.80-1.17; P = .77). Significant center variation was observed in fibrosis targeting and coverage with scarring. CONCLUSION Radiofrequency ablation lesions do not uniformly result in scar formation. A post hoc analysis suggests reduced arrhythmia recurrence when ablation-induced scarring covers fibrotic regions in patients with low baseline fibrosis.
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Affiliation(s)
- Nazem Akoum
- Cardiology Department, University of Washington Medical Center, Seattle, Washington
| | - Mario Mekhael
- Cardiology Department, Tulane University School of Medicine, New Orleans, Louisiana
| | - Felipe Bisbal
- Heart Institute, University Hospital Germans Trias i Pujol, Barcelona, Spain
| | | | | | | | | | - Tom Greene
- University of Utah, Salt Lake City, Utah
| | | | - Lilas Dagher
- Cardiology Department, Tulane University School of Medicine, New Orleans, Louisiana
| | | | - Moussa Mansour
- Cardiology Department, Massachusetts General Hospital, Boston, Massachusetts
| | - Francis Marchlinski
- Cardiology Department, University of Pennsylvania, Philadelphia, Pennsylvania
| | - David Wilber
- Cardiology Department, Loyola University Chicago, Chicago, Illinois
| | | | | | | | - Pierre Jaïs
- Cardiology Department, Segalen University, Bordeaux, France
| | - Prashanthan Sanders
- Cardiology Department, Adelaide Medical School, Adelaide, South Australia, Australia
| | | | - Jeroen J Bax
- Cardiology Department, Leiden University Medical Center, Leiden, The Netherlands; Cardiology Department, Turku Heart Center, Turku, Finland
| | | | | | | | | | - Nassir Marrouche
- Cardiology Department, Tulane University School of Medicine, New Orleans, Louisiana.
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Alken FA, Scherschel K, Zhu E, Wafaisade B, Kahle AK, Meyer C. Interactions of contact force, impedance, and power during repeated atrial arrhythmia ablation after previous atrial fibrillation ablation. Heart Rhythm 2025; 22:1411-1420. [PMID: 39293497 DOI: 10.1016/j.hrthm.2024.09.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 08/26/2024] [Accepted: 09/11/2024] [Indexed: 09/20/2024]
Abstract
BACKGROUND Acutely effective repeated radiofrequency catheter ablation (RFCA) after previous atrial fibrillation ablation depends on several parameters including local impedance (LI), contact force (CF), and power. OBJECTIVE We aimed to investigate the relationship of LI, CF, and power to the LI drop in a repeated atrial RFCA environment. METHODS Consecutive patients undergoing repeated atrial RFCA were studied. High-quality local electrograms were analyzed for morphology changes indicating effective RFCA and associated LI dynamics. The influence of baseline LI, mean CF, and power on the LI drop was analyzed. Investigated power levels included ≤25 W, 30 W, and ≥40 W. RESULTS A total of 1390 RFCA points from 48 patients (48% female; median age, 70 years) were analyzed. Of 309 analyzed electrograms, 40.5% showed effective RFCA morphology changes with an elevated median LI drop (effective, 19.7 Ω; partially effective, 14.1 Ω; P < .001). CF showed the highest correlation to the LI drop within high baseline LI and when applying ≥40 W (low baseline LI, R = 0.39; intermediate, R = 0.66; high, R = 0.72). Within low baseline LI regions, CF levels showed a lower correlation to the LI drop (≤25 W, R = 0.30; 30 W, R = 0.35; ≥40 W, R = 0.39). A mean CF ≥10 g resulted in elevated LI drops with higher power compared with lower power within all baseline LI tertiles (P < .001 each). CONCLUSION Within high baseline LI regions, CF plays a greater role for the maximum LI drop when higher power is chosen. A mean CF ≥10 g ensures elevated LI drops with increasing power levels.
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Affiliation(s)
- Fares-Alexander Alken
- Division of Cardiology/Angiology/Intensive Care, cNEP, cardiac Neuro- and Electrophysiology research group, EVK Düsseldorf, Düsseldorf, Germany
| | - Katharina Scherschel
- Division of Cardiology/Angiology/Intensive Care, cNEP, cardiac Neuro- and Electrophysiology research group, EVK Düsseldorf, Düsseldorf, Germany; Institute of Neural and Sensory Physiology, Heinrich Heine University Düsseldorf, Medical Faculty, cNEP, cardiac Neuro- and Electrophysiology Research Consortium, Düsseldorf, Germany
| | - Ernan Zhu
- Division of Cardiology/Angiology/Intensive Care, cNEP, cardiac Neuro- and Electrophysiology research group, EVK Düsseldorf, Düsseldorf, Germany
| | - Bahram Wafaisade
- Division of Cardiology/Angiology/Intensive Care, cNEP, cardiac Neuro- and Electrophysiology research group, EVK Düsseldorf, Düsseldorf, Germany
| | - Ann-Kathrin Kahle
- Division of Cardiology/Angiology/Intensive Care, cNEP, cardiac Neuro- and Electrophysiology research group, EVK Düsseldorf, Düsseldorf, Germany; Department of Cardiology, Pulmonology and Vascular Medicine, Medical Faculty, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Christian Meyer
- Division of Cardiology/Angiology/Intensive Care, cNEP, cardiac Neuro- and Electrophysiology research group, EVK Düsseldorf, Düsseldorf, Germany; Institute of Neural and Sensory Physiology, Heinrich Heine University Düsseldorf, Medical Faculty, cNEP, cardiac Neuro- and Electrophysiology Research Consortium, Düsseldorf, Germany.
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Tzeis S, Gerstenfeld EP, Kalman J, Saad EB, Sepehri Shamloo A, Andrade JG, Barbhaiya CR, Baykaner T, Boveda S, Calkins H, Chan N, Chen M, Chen S, Dagres N, Damiano RJ, De Potter T, Deisenhofer I, Derval N, Di Biase L, Duytschaever M, Dyrda K, Hindricks G, Hocini M, Kim Y, la Meir M, Merino JL, Michaud GF, Natale A, Nault I, Nava S, Nitta T, O’Neill M, Pak H, Piccini JP, Pürerfellner H, Reichlin T, Saenz LC, Sanders P, Schilling R, Schmidt B, Supple GE, Thomas KL, Tondo C, Verma A, Wan EY. 2024 European Heart Rhythm Association/Heart Rhythm Society/Asia Pacific Heart Rhythm Society/Latin American Heart Rhythm Society expert consensus statement on catheter and surgical ablation of atrial fibrillation. J Arrhythm 2024; 40:1217-1354. [PMID: 39669937 PMCID: PMC11632303 DOI: 10.1002/joa3.13082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Accepted: 05/15/2024] [Indexed: 12/14/2024] Open
Abstract
In the last three decades, ablation of atrial fibrillation (AF) has become an evidence-based safe and efficacious treatment for managing the most common cardiac arrhythmia. In 2007, the first joint expert consensus document was issued, guiding healthcare professionals involved in catheter or surgical AF ablation. Mounting research evidence and technological advances have resulted in a rapidly changing landscape in the field of catheter and surgical AF ablation, thus stressing the need for regularly updated versions of this partnership which were issued in 2012 and 2017. Seven years after the last consensus, an updated document was considered necessary to define a contemporary framework for selection and management of patients considered for or undergoing catheter or surgical AF ablation. This consensus is a joint effort from collaborating cardiac electrophysiology societies, namely the European Heart Rhythm Association, the Heart Rhythm Society, the Asia Pacific Heart Rhythm Society, and the Latin American Heart Rhythm Society.
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Affiliation(s)
| | | | - Jonathan Kalman
- Department of CardiologyRoyal Melbourne HospitalMelbourneAustralia
- Department of MedicineUniversity of Melbourne and Baker Research InstituteMelbourneAustralia
| | - Eduardo B. Saad
- Electrophysiology and PacingHospital Samaritano BotafogoRio de JaneiroBrazil
- Cardiac Arrhythmia Service, Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMAUSA
| | | | - Jason G. Andrade
- Department of MedicineVancouver General HospitalVancouverBritish ColumbiaCanada
| | | | - Tina Baykaner
- Division of Cardiology and Cardiovascular InstituteStanford UniversityStanfordCAUSA
| | - Serge Boveda
- Heart Rhythm Management DepartmentClinique PasteurToulouseFrance
- Universiteit Brussel (VUB)BrusselsBelgium
| | - Hugh Calkins
- Division of Cardiology, Department of MedicineJohns Hopkins UniversityBaltimoreMDUSA
| | - Ngai‐Yin Chan
- Department of Medicine and GeriatricsPrincess Margaret Hospital, Hong Kong Special Administrative RegionChina
| | - Minglong Chen
- The First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Shih‐Ann Chen
- Heart Rhythm CenterTaipei Veterans General Hospital, Taipei, and Cardiovascular Center, Taichung Veterans General HospitalTaichungTaiwan
| | | | - Ralph J. Damiano
- Division of Cardiothoracic Surgery, Department of SurgeryWashington University School of Medicine, Barnes‐Jewish HospitalSt. LouisMOUSA
| | | | - Isabel Deisenhofer
- Department of Electrophysiology, German Heart Center MunichTechnical University of Munich (TUM) School of Medicine and HealthMunichGermany
| | - Nicolas Derval
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Cardiac Electrophysiology and Stimulation DepartmentFondation Bordeaux Université and Bordeaux University Hospital (CHU)Pessac‐BordeauxFrance
| | - Luigi Di Biase
- Montefiore Medical CenterAlbert Einstein College of MedicineBronxNYUSA
| | | | - Katia Dyrda
- Department of Medicine, Montreal Heart InstituteUniversité de MontréalMontrealCanada
| | | | - Meleze Hocini
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Cardiac Electrophysiology and Stimulation DepartmentFondation Bordeaux Université and Bordeaux University Hospital (CHU)Pessac‐BordeauxFrance
| | - Young‐Hoon Kim
- Division of CardiologyKorea University College of Medicine and Korea University Medical CenterSeoulRepublic of Korea
| | - Mark la Meir
- Cardiac Surgery DepartmentVrije Universiteit Brussel, Universitair Ziekenhuis BrusselBrusselsBelgium
| | - Jose Luis Merino
- La Paz University Hospital, IdipazUniversidad AutonomaMadridSpain
- Hospital Viamed Santa ElenaMadridSpain
| | | | - Andrea Natale
- Texas Cardiac Arrhythmia InstituteSt. David's Medical CenterAustinTXUSA
- Case Western Reserve UniversityClevelandOHUSA
- Interventional ElectrophysiologyScripps ClinicSan DiegoCAUSA
- Department of Biomedicine and Prevention, Division of CardiologyUniversity of Tor VergataRomeItaly
| | - Isabelle Nault
- Institut Universitaire de Cardiologie et de Pneumologie de Quebec (IUCPQ)QuebecCanada
| | - Santiago Nava
- Departamento de ElectrocardiologíaInstituto Nacional de Cardiología ‘Ignacio Chávez’Ciudad de MéxicoMéxico
| | - Takashi Nitta
- Department of Cardiovascular SurgeryNippon Medical SchoolTokyoJapan
| | - Mark O’Neill
- Cardiovascular DirectorateSt. Thomas’ Hospital and King's CollegeLondonUK
| | - Hui‐Nam Pak
- Division of Cardiology, Department of Internal MedicineYonsei University College of MedicineSeoulRepublic of Korea
| | | | | | - Tobias Reichlin
- Department of Cardiology, Inselspital BernBern University Hospital, University of BernBernSwitzerland
| | - Luis Carlos Saenz
- International Arrhythmia CenterCardioinfantil FoundationBogotaColombia
| | - Prashanthan Sanders
- Centre for Heart Rhythm DisordersUniversity of Adelaide and Royal Adelaide HospitalAdelaideAustralia
| | | | - Boris Schmidt
- Cardioangiologisches Centrum BethanienMedizinische Klinik III, Agaplesion MarkuskrankenhausFrankfurtGermany
| | - Gregory E. Supple
- Cardiac Electrophysiology SectionUniversity of Pennsylvania Perelman School of MedicinePhiladelphiaPAUSA
| | | | - Claudio Tondo
- Department of Clinical Electrophysiology and Cardiac Pacing, Centro Cardiologico MonzinoIRCCSMilanItaly
- Department of Biomedical, Surgical and Dental SciencesUniversity of MilanMilanItaly
| | - Atul Verma
- McGill University Health CentreMcGill UniversityMontrealCanada
| | - Elaine Y. Wan
- Department of Medicine, Division of CardiologyColumbia University Vagelos College of Physicians and SurgeonsNew YorkNYUSA
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4
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Kakarla S, Pr U, Saravanan S, Namboodiri N. Volumetric lesion analysis and validation of various bipolar configurations in radiofrequency ablation of ventricular myocardium in a bovine model. J Interv Card Electrophysiol 2024:10.1007/s10840-024-01927-3. [PMID: 39400645 DOI: 10.1007/s10840-024-01927-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2024] [Accepted: 09/27/2024] [Indexed: 10/15/2024]
Abstract
BACKGROUND The bipolar radiofrequency ablation(B-RFA) strategy was increasingly used to target deep intramural re-entrant foci responsible for the arrhythmia not ablated by conventional unipolar RFA / sequential unipolar RFA. Lesional characteristics of various bipolar configurations were largely unknown. OBJECTIVE To investigate the lesional geometry in relation to various factors to determine the most effective ablation strategy that minimises steam pops and achieves transmurality. To assess the temperatures at the return electrode. METHODS A custom-made validated ex-vivo bipolar ablation model was used to assess lesion formation. The myocardial sample was placed between two ablation catheters in four different orientations. Lesions were created using different power (30 W, 40 W, 50 W) and time settings(30, 40 and 50 s) with different catheter orientations. Data was analysed using binary logistic regression and multiple linear regression. RESULTS Among 107 lesions, The volume of the active catheter lesion (266 +/- 137 mm^3) significantly differed from their return electrode counterparts (130 +/- 91.8 mm^3) (p < 0.001), and the temperatures at the return electrode end were lower than at the active electrode (p = 0.004). Higher power and longer duration application led to more frequent steam pops (p < 0.001), while true parallel configuration resulted in fewer steam pops (p < 0.001). CONCLUSION A custom model without ground electrode temperature monitoring is safe and cost-effective. The safest strategy is a true parallel configuration with an inter-electrode distance of at least 15 mm and a power of 30 W to 40 W, which generates lower steam pops and better transmurality.
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Affiliation(s)
- Saikiran Kakarla
- Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, 695011, India
| | - UmaShankar Pr
- Division of In-Vivo Models and Testing, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, 695011, India
| | | | - Narayanan Namboodiri
- Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, 695011, India.
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5
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Tzeis S, Gerstenfeld EP, Kalman J, Saad EB, Shamloo AS, Andrade JG, Barbhaiya CR, Baykaner T, Boveda S, Calkins H, Chan NY, Chen M, Chen SA, Dagres N, Damiano RJ, De Potter T, Deisenhofer I, Derval N, Di Biase L, Duytschaever M, Dyrda K, Hindricks G, Hocini M, Kim YH, la Meir M, Merino JL, Michaud GF, Natale A, Nault I, Nava S, Nitta T, O'Neill M, Pak HN, Piccini JP, Pürerfellner H, Reichlin T, Saenz LC, Sanders P, Schilling R, Schmidt B, Supple GE, Thomas KL, Tondo C, Verma A, Wan EY. 2024 European Heart Rhythm Association/Heart Rhythm Society/Asia Pacific Heart Rhythm Society/Latin American Heart Rhythm Society expert consensus statement on catheter and surgical ablation of atrial fibrillation. Heart Rhythm 2024; 21:e31-e149. [PMID: 38597857 DOI: 10.1016/j.hrthm.2024.03.017] [Citation(s) in RCA: 46] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 03/11/2024] [Indexed: 04/11/2024]
Abstract
In the last three decades, ablation of atrial fibrillation (AF) has become an evidence-based safe and efficacious treatment for managing the most common cardiac arrhythmia. In 2007, the first joint expert consensus document was issued, guiding healthcare professionals involved in catheter or surgical AF ablation. Mounting research evidence and technological advances have resulted in a rapidly changing landscape in the field of catheter and surgical AF ablation, thus stressing the need for regularly updated versions of this partnership which were issued in 2012 and 2017. Seven years after the last consensus, an updated document was considered necessary to define a contemporary framework for selection and management of patients considered for or undergoing catheter or surgical AF ablation. This consensus is a joint effort from collaborating cardiac electrophysiology societies, namely the European Heart Rhythm Association, the Heart Rhythm Society, the Asia Pacific Heart Rhythm Society, and the Latin American Heart Rhythm Society.
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Affiliation(s)
- Stylianos Tzeis
- Department of Cardiology, Mitera Hospital, 6, Erythrou Stavrou Str., Marousi, Athens, PC 151 23, Greece.
| | - Edward P Gerstenfeld
- Section of Cardiac Electrophysiology, University of California, San Francisco, CA, USA
| | - Jonathan Kalman
- Department of Cardiology, Royal Melbourne Hospital, Melbourne, Australia; Department of Medicine, University of Melbourne and Baker Research Institute, Melbourne, Australia
| | - Eduardo B Saad
- Electrophysiology and Pacing, Hospital Samaritano Botafogo, Rio de Janeiro, Brazil; Cardiac Arrhythmia Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | | | - Jason G Andrade
- Department of Medicine, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | | | - Tina Baykaner
- Division of Cardiology and Cardiovascular Institute, Stanford University, Stanford, CA, USA
| | - Serge Boveda
- Heart Rhythm Management Department, Clinique Pasteur, Toulouse, France; Universiteit Brussel (VUB), Brussels, Belgium
| | - Hugh Calkins
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Ngai-Yin Chan
- Department of Medicine and Geriatrics, Princess Margaret Hospital, Hong Kong Special Administrative Region, China
| | - Minglong Chen
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shih-Ann Chen
- Heart Rhythm Center, Taipei Veterans General Hospital, Taipei, and Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan
| | | | - Ralph J Damiano
- Division of Cardiothoracic Surgery, Department of Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, MO, USA
| | | | - Isabel Deisenhofer
- Department of Electrophysiology, German Heart Center Munich, Technical University of Munich (TUM) School of Medicine and Health, Munich, Germany
| | - Nicolas Derval
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Cardiac Electrophysiology and Stimulation Department, Fondation Bordeaux Université and Bordeaux University Hospital (CHU), Pessac-Bordeaux, France
| | - Luigi Di Biase
- Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | | | - Katia Dyrda
- Department of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | | | - Meleze Hocini
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Cardiac Electrophysiology and Stimulation Department, Fondation Bordeaux Université and Bordeaux University Hospital (CHU), Pessac-Bordeaux, France
| | - Young-Hoon Kim
- Division of Cardiology, Korea University College of Medicine and Korea University Medical Center, Seoul, Republic of Korea
| | - Mark la Meir
- Cardiac Surgery Department, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Jose Luis Merino
- La Paz University Hospital, Idipaz, Universidad Autonoma, Madrid, Spain; Hospital Viamed Santa Elena, Madrid, Spain
| | | | - Andrea Natale
- Texas Cardiac Arrhythmia Institute, St. David's Medical Center, Austin, TX, USA; Case Western Reserve University, Cleveland, OH, USA; Interventional Electrophysiology, Scripps Clinic, San Diego, CA, USA; Department of Biomedicine and Prevention, Division of Cardiology, University of Tor Vergata, Rome, Italy
| | - Isabelle Nault
- Institut Universitaire de Cardiologie et de Pneumologie de Quebec (IUCPQ), Quebec, Canada
| | - Santiago Nava
- Departamento de Electrocardiología, Instituto Nacional de Cardiología 'Ignacio Chávez', Ciudad de México, México
| | - Takashi Nitta
- Department of Cardiovascular Surgery, Nippon Medical School, Tokyo, Japan
| | - Mark O'Neill
- Cardiovascular Directorate, St. Thomas' Hospital and King's College, London, UK
| | - Hui-Nam Pak
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | | | | | - Tobias Reichlin
- Department of Cardiology, Inselspital Bern, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Luis Carlos Saenz
- International Arrhythmia Center, Cardioinfantil Foundation, Bogota, Colombia
| | - Prashanthan Sanders
- Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | | | - Boris Schmidt
- Cardioangiologisches Centrum Bethanien, Medizinische Klinik III, Agaplesion Markuskrankenhaus, Frankfurt, Germany
| | - Gregory E Supple
- Cardiac Electrophysiology Section, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | | | - Claudio Tondo
- Department of Clinical Electrophysiology and Cardiac Pacing, Centro Cardiologico Monzino, IRCCS, Milan, Italy; Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Atul Verma
- McGill University Health Centre, McGill University, Montreal, Canada
| | - Elaine Y Wan
- Department of Medicine, Division of Cardiology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
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Pavani P, Olanrewaju OA, Sagar RS, Bai M, Chand J, Bhatia V, Sagar F, Karishma F, Islam H, Kumar A, Versha F, Islam R, Nadeem T. Comparative Analysis of Clinical Outcomes of High-power, Short-duration Ablation versus Low-power, Long-duration Ablation Strategy in Patients with Atrial Fibrillation: A Comprehensive Umbrella Review of Meta-analyses. J Innov Card Rhythm Manag 2024; 15:5963-5980. [PMID: 39193534 PMCID: PMC11346500 DOI: 10.19102/icrm.2024.15083] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 03/15/2024] [Indexed: 08/29/2024] Open
Abstract
Atrial fibrillation (AF) affects around 33 million people worldwide, rendering it a common cardiac arrhythmia. Catheter ablation (CA) has evolved as a leading therapeutic intervention for symptomatic AF. This umbrella review systematically evaluates existing systematic reviews and meta-analyses to assess the safety, efficacy, and potential of high-power, short-duration (HPSD) ablation as an alternative therapy option for AF. A thorough exploration was undertaken across PubMed, the Cochrane Library, and Embase to identify pertinent studies for inclusion in this umbrella review. The Grading of Recommendations Assessment, Development, and Evaluation (GRADE) method was employed to assess the overall certainty of the evidence comprehensively, and the quality of the incorporated reviews was meticulously evaluated through use of the AMSTAR 2 tool, the Cochrane Collaboration tool, and the Newcastle-Ottawa scale. In this study, we initially identified 35 systematic reviews and meta-analyses, narrowing them down to a final selection of 11 studies, which collectively integrated data from 6 randomized controlled trials and 26 observational studies. For primary efficacy outcomes, the HPSD approach led to a non-significant decrease in the risk of atrial tachyarrhythmia recurrence (risk ratio [RR], 0.88; 95% confidence interval [CI], 0.70-1.12; I 2 = 90%; P = .31) and a significantly reduced risk of AF recurrence (RR, 0.53; 95% CI, 0.42-0.67; I 2 = 0%; P < .00001) compared to the low-power, long-duration (LPLD) approach. In terms of primary safety outcomes, the HPSD approach significantly reduced the risk of esophageal thermal injury (ETI) (RR, 0.71; 95% CI, 0.61-0.83; I 2 = 0%; P < .00001) and facilitated a non-significant decrease in the risk of other major complications (RR, 0.87; 95% CI, 0.73-1.03; I 2 = 0%; P = .10). In conclusion, HPSD therapy is safer and more effective than LPLD therapy, facilitating decreased AF recurrence rates along with reductions in ETI, total procedure duration, ablation number, ablation time, fluoroscopy time, and acute pulmonary vein reconnection.
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Affiliation(s)
- Peddi Pavani
- Department of Surgery, Kurnool Medical College, Kurnool, India
| | | | - Raja Subhash Sagar
- Department of Medicine, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan
| | - Monika Bai
- Department of Medicine, Peoples University of Medical and Health Sciences for Women, Nawabshah, Pakistan
| | - Jai Chand
- Department of Medicine, Khairpur Medical College, Khairpur, Pakistan
| | - Vishal Bhatia
- Department of Medicine, Khairpur Medical College, Khairpur, Pakistan
| | - Fnu Sagar
- Department of Medicine, Bahria University Medical and Dental College, Karachi, Pakistan
| | - Fnu Karishma
- Department of Medicine, Ghulam Muhammad Mahar Medical College, Sukkur, Pakistan
| | - Hamza Islam
- Department of Medicine, Punjab Medical College, Faisalabad, Pakistan
| | - Aman Kumar
- Department of Medicine, Ghulam Muhammad Mahar Medical College, Sukkur, Pakistan
| | - Fnu Versha
- Department of Medicine, Peoples University of Medical and Health Sciences for Women, Nawabshah, Pakistan
| | - Rabia Islam
- Department of Medicine, Punjab Medical College, Faisalabad, Pakistan
| | - Taha Nadeem
- Department of Medicine, Allama Iqbal Medical College, Lahore, Pakistan
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7
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Tzeis S, Gerstenfeld EP, Kalman J, Saad E, Shamloo AS, Andrade JG, Barbhaiya CR, Baykaner T, Boveda S, Calkins H, Chan NY, Chen M, Chen SA, Dagres N, Damiano RJ, De Potter T, Deisenhofer I, Derval N, Di Biase L, Duytschaever M, Dyrda K, Hindricks G, Hocini M, Kim YH, la Meir M, Merino JL, Michaud GF, Natale A, Nault I, Nava S, Nitta T, O'Neill M, Pak HN, Piccini JP, Pürerfellner H, Reichlin T, Saenz LC, Sanders P, Schilling R, Schmidt B, Supple GE, Thomas KL, Tondo C, Verma A, Wan EY. 2024 European Heart Rhythm Association/Heart Rhythm Society/Asia Pacific Heart Rhythm Society/Latin American Heart Rhythm Society expert consensus statement on catheter and surgical ablation of atrial fibrillation. J Interv Card Electrophysiol 2024; 67:921-1072. [PMID: 38609733 DOI: 10.1007/s10840-024-01771-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
In the last three decades, ablation of atrial fibrillation (AF) has become an evidence-based safe and efficacious treatment for managing the most common cardiac arrhythmia. In 2007, the first joint expert consensus document was issued, guiding healthcare professionals involved in catheter or surgical AF ablation. Mounting research evidence and technological advances have resulted in a rapidly changing landscape in the field of catheter and surgical AF ablation, thus stressing the need for regularly updated versions of this partnership which were issued in 2012 and 2017. Seven years after the last consensus, an updated document was considered necessary to define a contemporary framework for selection and management of patients considered for or undergoing catheter or surgical AF ablation. This consensus is a joint effort from collaborating cardiac electrophysiology societies, namely the European Heart Rhythm Association, the Heart Rhythm Society (HRS), the Asia Pacific HRS, and the Latin American HRS.
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Affiliation(s)
| | - Edward P Gerstenfeld
- Section of Cardiac Electrophysiology, University of California, San Francisco, CA, USA
| | - Jonathan Kalman
- Department of Cardiology, Royal Melbourne Hospital, Melbourne, Australia
- Department of Medicine, University of Melbourne and Baker Research Institute, Melbourne, Australia
| | - Eduardo Saad
- Electrophysiology and Pacing, Hospital Samaritano Botafogo, Rio de Janeiro, Brazil
- Cardiac Arrhythmia Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | | | - Jason G Andrade
- Department of Medicine, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | | | - Tina Baykaner
- Division of Cardiology and Cardiovascular Institute, Stanford University, Stanford, CA, USA
| | - Serge Boveda
- Heart Rhythm Management Department, Clinique Pasteur, Toulouse, France
- Universiteit Brussel (VUB), Brussels, Belgium
| | - Hugh Calkins
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Ngai-Yin Chan
- Department of Medicine and Geriatrics, Princess Margaret Hospital, Hong Kong Special Administrative Region, China
| | - Minglong Chen
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shih-Ann Chen
- Heart Rhythm Center, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Nikolaos Dagres
- Department of Cardiac Electrophysiology, Charité University Berlin, Berlin, Germany
| | - Ralph J Damiano
- Division of Cardiothoracic Surgery, Department of Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, MO, USA
| | | | - Isabel Deisenhofer
- Department of Electrophysiology, German Heart Center Munich, Technical University of Munich (TUM) School of Medicine and Health, Munich, Germany
| | - Nicolas Derval
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Cardiac Electrophysiology and Stimulation Department, Fondation Bordeaux Université and Bordeaux University Hospital (CHU), Pessac-Bordeaux, France
| | - Luigi Di Biase
- Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | | | - Katia Dyrda
- Department of Cardiology, Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Gerhard Hindricks
- Department of Cardiac Electrophysiology, Charité University Berlin, Berlin, Germany
| | - Meleze Hocini
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Cardiac Electrophysiology and Stimulation Department, Fondation Bordeaux Université and Bordeaux University Hospital (CHU), Pessac-Bordeaux, France
| | - Young-Hoon Kim
- Division of Cardiology, Korea University College of Medicine and Korea University Medical Center, Seoul, Republic of Korea
| | - Mark la Meir
- Cardiac Surgery Department, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, Brussels, Belgium
| | - Jose Luis Merino
- La Paz University Hospital, Idipaz, Universidad Autonoma, Madrid, Spain
- Hospital Viamed Santa Elena, Madrid, Spain
| | - Gregory F Michaud
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Andrea Natale
- Texas Cardiac Arrhythmia Institute, St. David's Medical Center, Austin, TX, USA
- Case Western Reserve University, Cleveland, OH, USA
- Interventional Electrophysiology, Scripps Clinic, San Diego, CA, USA
- Department of Biomedicine and Prevention, Division of Cardiology, University of Tor Vergata, Rome, Italy
| | - Isabelle Nault
- Institut Universitaire de Cardiologie et de Pneumologie de Quebec (IUCPQ), Quebec, Canada
| | - Santiago Nava
- Departamento de Electrocardiología, Instituto Nacional de Cardiología 'Ignacio Chávez', Ciudad de México, México
| | - Takashi Nitta
- Department of Cardiovascular Surgery, Nippon Medical School, Tokyo, Japan
| | - Mark O'Neill
- Cardiovascular Directorate, St. Thomas' Hospital and King's College, London, UK
| | - Hui-Nam Pak
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | | | | | - Tobias Reichlin
- Department of Cardiology, Inselspital Bern, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Luis Carlos Saenz
- International Arrhythmia Center, Cardioinfantil Foundation, Bogota, Colombia
| | - Prashanthan Sanders
- Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | | | - Boris Schmidt
- Cardioangiologisches Centrum Bethanien, Medizinische Klinik III, Agaplesion Markuskrankenhaus, Frankfurt, Germany
| | - Gregory E Supple
- Cardiac Electrophysiology Section, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | | | - Claudio Tondo
- Department of Clinical Electrophysiology and Cardiac Pacing, Centro Cardiologico Monzino, IRCCS, Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Atul Verma
- McGill University Health Centre, McGill University, Montreal, Canada
| | - Elaine Y Wan
- Department of Medicine, Division of Cardiology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
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8
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Yoshimura S, Take Y, Kaseno K, Goto K, Matsuo Y, Aoki H, Sasaki T, Miki Y, Nakamura K, Naito S. Characteristics of radiofrequency lesions in patients with symptomatic periesophageal vagal nerve injury after pulmonary vein isolation. J Arrhythm 2024; 40:510-517. [PMID: 38939771 PMCID: PMC11199810 DOI: 10.1002/joa3.13036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 02/21/2024] [Accepted: 03/28/2024] [Indexed: 06/29/2024] Open
Abstract
Background Periesophageal vagal nerve injury (PNI) is an unpredictable and serious complication of atrial fibrillation (AF) ablation. We aimed to identify the factors associated with symptomatic PNI. Methods This study included 1391 patients who underwent ablation index-guided pulmonary vein isolation (PVI) using the CARTO system. The target ablation index was set at 550, except for the left atrial (LA) posterior wall near the esophagus, where radiofrequency (RF) power and duration were limited. Ten patients (0.72%) were diagnosed with symptomatic PNI. We randomly selected 40 patients without PNI (1:4 ratio) matched based on age, sex, body mass index, LA diameter, type of AF, and esophageal location. We measured the shortest distance from the RF lesions to the esophagus (LED) and classified the RF lesions according to the LED into four groups: 0-5, 5-10, 10-15, and 15-20 mm. We conducted a comparative analysis of classified RF lesions between patients with PNI (n = 10) and those without (n = 40). Results The contact force at LED 0-5 mm was significantly higher in patients with PNI than in those without (14.6 ± 1.7 vs. 12.0 ± 2.9 g; p = .01). Multivariate logistic analysis revealed that the independent factor for PNI was contact force at an LED of 0-5 mm (odds ratio: 1.506; 95% confidence interval: 1.053-2.153; p = .025). Conclusions The symptomatic PNI was significantly associated with a higher contact force near the esophagus. Strategies for regulating contact force near the esophagus may aid in the prevention of PNI.
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Affiliation(s)
- Shingo Yoshimura
- Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan
| | - Yutaka Take
- Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan
| | - Kenichi Kaseno
- Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan
| | - Koji Goto
- Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan
| | - Yuji Matsuo
- Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan
| | - Hideyuki Aoki
- Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan
| | - Takehito Sasaki
- Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan
| | - Yuko Miki
- Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan
| | - Kohki Nakamura
- Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan
| | - Shigeto Naito
- Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan
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9
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Tzeis S, Gerstenfeld EP, Kalman J, Saad EB, Sepehri Shamloo A, Andrade JG, Barbhaiya CR, Baykaner T, Boveda S, Calkins H, Chan NY, Chen M, Chen SA, Dagres N, Damiano RJ, De Potter T, Deisenhofer I, Derval N, Di Biase L, Duytschaever M, Dyrda K, Hindricks G, Hocini M, Kim YH, la Meir M, Merino JL, Michaud GF, Natale A, Nault I, Nava S, Nitta T, O’Neill M, Pak HN, Piccini JP, Pürerfellner H, Reichlin T, Saenz LC, Sanders P, Schilling R, Schmidt B, Supple GE, Thomas KL, Tondo C, Verma A, Wan EY. 2024 European Heart Rhythm Association/Heart Rhythm Society/Asia Pacific Heart Rhythm Society/Latin American Heart Rhythm Society expert consensus statement on catheter and surgical ablation of atrial fibrillation. Europace 2024; 26:euae043. [PMID: 38587017 PMCID: PMC11000153 DOI: 10.1093/europace/euae043] [Citation(s) in RCA: 174] [Impact Index Per Article: 174.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 04/09/2024] Open
Abstract
In the last three decades, ablation of atrial fibrillation (AF) has become an evidence-based safe and efficacious treatment for managing the most common cardiac arrhythmia. In 2007, the first joint expert consensus document was issued, guiding healthcare professionals involved in catheter or surgical AF ablation. Mounting research evidence and technological advances have resulted in a rapidly changing landscape in the field of catheter and surgical AF ablation, thus stressing the need for regularly updated versions of this partnership which were issued in 2012 and 2017. Seven years after the last consensus, an updated document was considered necessary to define a contemporary framework for selection and management of patients considered for or undergoing catheter or surgical AF ablation. This consensus is a joint effort from collaborating cardiac electrophysiology societies, namely the European Heart Rhythm Association, the Heart Rhythm Society, the Asia Pacific Heart Rhythm Society, and the Latin American Heart Rhythm Society .
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Affiliation(s)
- Stylianos Tzeis
- Department of Cardiology, Mitera Hospital, 6, Erythrou Stavrou Str., Marousi, Athens, PC 151 23, Greece
| | - Edward P Gerstenfeld
- Section of Cardiac Electrophysiology, University of California, San Francisco, CA, USA
| | - Jonathan Kalman
- Department of Cardiology, Royal Melbourne Hospital, Melbourne, Australia
- Department of Medicine, University of Melbourne and Baker Research Institute, Melbourne, Australia
| | - Eduardo B Saad
- Electrophysiology and Pacing, Hospital Samaritano Botafogo, Rio de Janeiro, Brazil
- Cardiac Arrhythmia Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | | | - Jason G Andrade
- Department of Medicine, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | | | - Tina Baykaner
- Division of Cardiology and Cardiovascular Institute, Stanford University, Stanford, CA, USA
| | - Serge Boveda
- Heart Rhythm Management Department, Clinique Pasteur, Toulouse, France
- Universiteit Brussel (VUB), Brussels, Belgium
| | - Hugh Calkins
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Ngai-Yin Chan
- Department of Medicine and Geriatrics, Princess Margaret Hospital, Hong Kong Special Administrative Region, China
| | - Minglong Chen
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shih-Ann Chen
- Heart Rhythm Center, Taipei Veterans General Hospital, Taipei, and Cardiovascular Center, Taichung Veterans General Hospital, Taichung, Taiwan
| | | | - Ralph J Damiano
- Division of Cardiothoracic Surgery, Department of Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, MO, USA
| | | | - Isabel Deisenhofer
- Department of Electrophysiology, German Heart Center Munich, Technical University of Munich (TUM) School of Medicine and Health, Munich, Germany
| | - Nicolas Derval
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Cardiac Electrophysiology and Stimulation Department, Fondation Bordeaux Université and Bordeaux University Hospital (CHU), Pessac-Bordeaux, France
| | - Luigi Di Biase
- Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | | | - Katia Dyrda
- Department of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | | | - Meleze Hocini
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Cardiac Electrophysiology and Stimulation Department, Fondation Bordeaux Université and Bordeaux University Hospital (CHU), Pessac-Bordeaux, France
| | - Young-Hoon Kim
- Division of Cardiology, Korea University College of Medicine and Korea University Medical Center, Seoul, Republic of Korea
| | - Mark la Meir
- Cardiac Surgery Department, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Jose Luis Merino
- La Paz University Hospital, Idipaz, Universidad Autonoma, Madrid, Spain
- Hospital Viamed Santa Elena, Madrid, Spain
| | | | - Andrea Natale
- Texas Cardiac Arrhythmia Institute, St. David’s Medical Center, Austin, TX, USA
- Case Western Reserve University, Cleveland, OH, USA
- Interventional Electrophysiology, Scripps Clinic, San Diego, CA, USA
- Department of Biomedicine and Prevention, Division of Cardiology, University of Tor Vergata, Rome, Italy
| | - Isabelle Nault
- Institut Universitaire de Cardiologie et de Pneumologie de Quebec (IUCPQ), Quebec, Canada
| | - Santiago Nava
- Departamento de Electrocardiología, Instituto Nacional de Cardiología ‘Ignacio Chávez’, Ciudad de México, México
| | - Takashi Nitta
- Department of Cardiovascular Surgery, Nippon Medical School, Tokyo, Japan
| | - Mark O’Neill
- Cardiovascular Directorate, St. Thomas’ Hospital and King’s College, London, UK
| | - Hui-Nam Pak
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | | | | | - Tobias Reichlin
- Department of Cardiology, Inselspital Bern, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Luis Carlos Saenz
- International Arrhythmia Center, Cardioinfantil Foundation, Bogota, Colombia
| | - Prashanthan Sanders
- Centre for Heart Rhythm Disorders, University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia
| | | | - Boris Schmidt
- Cardioangiologisches Centrum Bethanien, Medizinische Klinik III, Agaplesion Markuskrankenhaus, Frankfurt, Germany
| | - Gregory E Supple
- Cardiac Electrophysiology Section, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | | | - Claudio Tondo
- Department of Clinical Electrophysiology and Cardiac Pacing, Centro Cardiologico Monzino, IRCCS, Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Atul Verma
- McGill University Health Centre, McGill University, Montreal, Canada
| | - Elaine Y Wan
- Department of Medicine, Division of Cardiology, Columbia University Vagelos College of Physicians and Surgeons, New York, NY, USA
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10
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Rottner L, Metzner A. Atrial Fibrillation Ablation: Current Practice and Future Perspectives. J Clin Med 2023; 12:7556. [PMID: 38137626 PMCID: PMC10743921 DOI: 10.3390/jcm12247556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 11/27/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
Catheter ablation to perform pulmonary vein isolation (PVI) is established as a mainstay in rhythm control of atrial fibrillation (AF). The aim of this review is to provide an overview of current practice and future perspectives in AF ablation. The main clinical benefit of AF ablation is the reduction of arrhythmia-related symptoms and improvement of quality of life. Catheter ablation of AF is recommended, in general, as a second-line therapy for patients with symptomatic paroxysmal or persistent AF, who have failed or are intolerant to pharmacological therapy. In selected patients with heart failure and reduced left-ventricular fraction, catheter ablation was proven to reduce all-cause mortality. Also, optimal management of comorbidities can reduce AF recurrence after AF ablation; therefore, multimodal risk assessment and therapy are mandatory. To date, the primary ablation tool in widespread use is still single-tip catheter radiofrequency (RF) based ablation. Additionally, balloon-based pulmonary vein isolation (PVI) has gained prominence, especially due to its user-friendly nature and established safety and efficacy profile. So far, the cryoballoon (CB) is the most studied single-shot device. CB-based PVI is characterized by high efficiency, convincing success rates, and a beneficial safety profile. Recently, CB-PVI as a first-line therapy for AF was shown to be superior to pharmacological treatment in terms of efficacy and was shown to reduce progression from paroxysmal to persistent AF. In this context, CB-based PVI gains more and more importance as a first-line treatment choice. Non-thermal energy sources, namely pulsed-field ablation (PFA), have garnered attention due to their cardioselectivity. Although initially applied via a basket-like ablation tool, recent developments allow for point-by-point ablation, particularly with the advent of a novel lattice tip catheter.
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Affiliation(s)
- Laura Rottner
- University Heart and Vascular Center, University Hospital Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Andreas Metzner
- University Heart and Vascular Center, University Hospital Hamburg-Eppendorf, 20251 Hamburg, Germany
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11
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Boersma L, Andrade JG, Betts T, Duytschaever M, Pürerfellner H, Santoro F, Tzeis S, Verma A. Progress in atrial fibrillation ablation during 25 years of Europace journal. Europace 2023; 25:euad244. [PMID: 37622592 PMCID: PMC10451004 DOI: 10.1093/europace/euad244] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023] Open
Abstract
The first edition of Europace journal in 1999 came right around the time of the landmark publication of the electrophysiologists from Bordeaux, establishing how elimination of ectopic activity from the pulmonary veins (PVs) resulted in a marked reduction of atrial fibrillation (AF). The past 25 years have seen an incredible surge in scientific interest to develop new catheters and energy sources to optimize durability and safety of ablation, as well as study the mechanisms for AF and devise ablation strategies. While ablation in the beginning was performed with classic 4 mm tip catheters that emitted radiofrequency (RF) energy to create tissue lesions, this evolved to using irrigation and contact force (CF) measurement while increasing power. Also, so-called single-shot devices were developed with balloons and arrays to create larger contiguous lesions, and energy sources changed from RF current to cryogenic ablation and more recently pulsed field ablation with electrical current. Although PV ablation has remained the basis for every AF ablation, it was soon recognized that this was not enough to cure all patients, especially those with non-paroxysmal AF. Standardized approaches for additional ablation targets have been used but have not been satisfactory in all patients so far. This led to highly technical mapping systems that are meant to unravel the drivers for the maintenance of AF. In the following sections, the development of energies, strategies, and tools is described with a focus on the contribution of Europace to publish the outcomes of studies that were done during the past 25 years.
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Affiliation(s)
- Lucas Boersma
- Cardiology Department, St. Antonius Hospital Nieuwegein/Amsterdam University Medical Center, PO 2500, 3430 EM Nieuwegein, The Netherlands
| | - Jason G Andrade
- Department of Medicine, University of British Columbia, Vancouver, Canada
- Cardiology Department, Center for Cardiovascular Innovation, Vancouver, Canada
- Montreal Heart Institute, Department of Medicine, Université de Montréal, Montreal, Canada
| | - Tim Betts
- Department of Cardiology, Oxford University, Oxford, UK
| | | | | | - Francesco Santoro
- Department of Medical and Surgery Sciences, University of Foggia, Foggia, Italy
| | - Stylianos Tzeis
- Cardiology Department, Mitera Hospital, Hygeia Group, Athens, Greece
| | - Atul Verma
- Cardiology Department, McGill University Health Center, Montreal, Quebec, Canada
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12
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Kawakami S, Ogawa E, Fukaya H, Matsuura G, Aiga S, Kumagai H. Estimation of mechanical properties by transcatheter monitoring using local impedance and contact force. J Med Eng Technol 2023; 47:141-146. [PMID: 36426804 DOI: 10.1080/03091902.2022.2134479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The mechanical properties of the myocardium in the left ventricle and right atrium were estimated by simultaneously measuring the local impedance (LI) and contact force (CF) using an ablation catheter. Radiofrequency catheter ablation (RFCA) is a well-established arrhythmia treatment. Monitoring the RF power, CF and properties of myocardium during RFCA are necessary to estimate the effect of ablation. Indices, such as CF, lesion size index and ablation index, do not include the myocardium mechanical properties. Therefore, there is the risk of side effects, such as cardiac tamponade, by excessive catheter indentation into vulnerable areas. We propose the simultaneous measurement of LI and CF for estimating the myocardial mechanical properties to reduce the side effects. In this study, an in vitro experimental system was constructed to measure LI and CF via the catheter. The relationship between the porcine myocardial tissue thickness and CF-LI curve was investigated using the left ventricle and right atrium. Power function coefficients approximating the CF-LI curve increased with thicker left ventricle. The thickness of the myocardium can be estimated by simultaneously measuring LI and CF. Intraoperative measurement of the myocardial mechanical properties can be used to determine the ablation conditions at each site.
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Affiliation(s)
- Sota Kawakami
- Graduate School of Medical Sciences, Kitasato University, Kanagawa, Japan
| | - Emiyu Ogawa
- Graduate School of Medical Sciences, Kitasato University, Kanagawa, Japan.,Allied Health Sciences, Kitasato University, Kanagawa, Japan
| | - Hidehira Fukaya
- Department of Cardiovascular Medicine, Kitasato University Hospital, Kanagawa, Japan
| | - Gen Matsuura
- Department of Cardiovascular Medicine, Kitasato University Hospital, Kanagawa, Japan
| | - Sumire Aiga
- Allied Health Sciences, Kitasato University, Kanagawa, Japan
| | - Hiroshi Kumagai
- Graduate School of Medical Sciences, Kitasato University, Kanagawa, Japan.,Allied Health Sciences, Kitasato University, Kanagawa, Japan
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13
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Hanley A. Lesion Size Index-guided high-power ablation for atrial fibrillation: Opening the therapeutic window. J Cardiovasc Electrophysiol 2023; 34:1312-1313. [PMID: 36709478 DOI: 10.1111/jce.15836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 01/22/2023] [Indexed: 01/30/2023]
Affiliation(s)
- Alan Hanley
- Demoulas Center for Cardiac Arrhythmias, Massachusetts General Hospital-Cardiac Electrophysiology, Boston, Massachusetts, USA
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14
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Radiofrequency Pulmonary Vein Isolation without Esophageal Temperature Monitoring: Contact-Force Characteristics and Incidence of Esophageal Thermal Damage. J Clin Med 2022; 11:jcm11236917. [PMID: 36498492 PMCID: PMC9741279 DOI: 10.3390/jcm11236917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/20/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
Esophageal thermal lesions following pulmonary vein isolation (PVI) for atrial fibrillation (AF) potentially harbor lethal complications. Radiofrequency (RF)-PVI using contact force-technology can reduce collateral damage. We evaluated the incidence of endoscopically detected esophageal lesions (EDEL) and the contribution of contact force to esophageal lesion formation without esophageal temperature monitoring. One hundred and thirty-one AF patients underwent contact force-guided RF-PVI. Contact force, energy, force-time-integral, and force-power-time-integral were adopted. During PVI at the posterior segment of the wide antral circumferential line, limits were set for energy (30 W), duration (30 s) and contact force (40 g). Ablations were analyzed postero-superior and -inferior around PVs. Endoscopy within 120 h identified EDEL in six patients (4.6%). In EDEL(+), obesity was less frequent (17% vs. 68%, p = 0.018), creatinine was higher (1.55 ± 1.18 vs. 1.07 ± 0.42 mg/dL, p = 0.016), and exclusively at the left postero-inferior site, force-time-integral and force-power-time-integral were greater (2973 ± 3267 vs. 1757 ± 1262 g·s, p = 0.042 and 83,547 ± 105,940 vs. 43,556 ± 35,255 g·J, p = 0.022, respectively) as compared to EDEL(-) patients. No major complications occurred. At 12 months, arrhythmia-free survival was 74%. The incidence of EDEL was low after contact force-guided RF-PVI. Implementing combined contact force-indices on the postero-inferior site of left-sided PVs may reduce EDEL.
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15
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Gabriels JK, Ying X, Purkayastha S, Braunstein E, Liu CF, Markowitz SM, Mountantonakis S, Thomas G, Goldner B, Willner J, Goyal R, Ip JE, Lerman BB, Carter J, Bereanda N, Fitzgerald MM, Anca D, Patel A, Cheung JW. Safety and Efficacy of a Novel Approach to Pulmonary Vein Isolation Using Prolonged Apneic Oxygenation. JACC Clin Electrophysiol 2022; 9:497-507. [PMID: 36752460 DOI: 10.1016/j.jacep.2022.10.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/11/2022] [Accepted: 10/19/2022] [Indexed: 01/20/2023]
Abstract
BACKGROUND Improved ablation catheter-tissue contact results in more effective ablation lesions. Respiratory motion causes catheter instability, which impacts durable pulmonary vein isolation (PVI). OBJECTIVES This study sought to evaluate the safety and efficacy of a novel ablation strategy involving prolonged periods of apneic oxygenation during PVI. METHODS We conducted a multicenter, prospective controlled study of 128 patients (mean age 63 ± 11 years; 37% women) with paroxysmal atrial fibrillation undergoing PVI. Patients underwent PVI under general anesthesia using serial 4-minute runs of apneic oxygenation (apnea group; n = 64) or using standard ventilation settings (control group; n = 64). Procedural data, arterial blood gas samples, catheter position coordinates, and ablation lesion characteristics were collected. RESULTS Baseline characteristics between the 2 groups were similar. Catheter stability was significantly improved in the apnea group, as reflected by a decreased mean catheter displacement (1.55 ± 0.97 mm vs 2.25 ± 1.13 mm; P < 0.001) and contact force SD (4.9 ± 1.1 g vs 5.2 ± 1.5 g; P = 0.046). The percentage of lesions with a mean catheter displacement >2 mm was significantly lower in the apnea group (22% vs 44%; P < 0.001). Compared with the control group, the total ablation time to achieve PVI was reduced in the apnea group (18.8 ± 6.9 minutes vs 23.4 ± 7.8 minutes; P = 0.001). There were similar rates of first-pass PVI, acute PV reconnections and dormant PV reconnections between the two groups. CONCLUSIONS A novel strategy of performing complete PVI during apneic oxygenation results in improved catheter stability and decreased ablation times without adverse events. (Radiofrequency Ablation of Atrial Fibrillation Under Apnea; NCT04170894).
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Affiliation(s)
- James K Gabriels
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Xiaohan Ying
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Subhanik Purkayastha
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Eric Braunstein
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Christopher F Liu
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Steven M Markowitz
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Stavros Mountantonakis
- Division of Electrophysiology, Lenox Hill Hospital, Northwell Health, New York, New York, USA
| | - George Thomas
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Bruce Goldner
- Division of Electrophysiology, Long Island Jewish Hospital, Northwell Health, Queens, New York, USA
| | - Jonathan Willner
- Division of Electrophysiology, North Shore University Hospital, Northwell Health, Manhasset, New York, USA
| | - Rajat Goyal
- Division of Electrophysiology, Southside Hospital, Northwell Health, Bay Shore, New York, USA
| | - James E Ip
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Bruce B Lerman
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Jane Carter
- Department of Anesthesia, Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas, USA
| | - Nicola Bereanda
- Department of Anesthesia, Lenox Hill Hospital, Northwell Health, New York, New York, USA
| | - Meghann M Fitzgerald
- Department of Anesthesia, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Diana Anca
- Department of Anesthesia, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA
| | - Apoor Patel
- Division of Cardiac Electrophysiology, Department of Cardiology, Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas, USA.
| | - Jim W Cheung
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine/New York-Presbyterian Hospital, New York, New York, USA.
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16
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Park SY, Singh-Moon R, Yang H, Hendon C. Monitoring of irrigated lesion formation with single fiber based multispectral system using machine learning. JOURNAL OF BIOPHOTONICS 2022; 15:e202100374. [PMID: 35666015 PMCID: PMC9452461 DOI: 10.1002/jbio.202100374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 05/15/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
In radiofrequency ablation (RFA) treatment of cardiac arrhythmias, intraprocedural assessment of treatment efficacy relies on indirect measures of adequate tissue destruction. Direct sensing of diffuse reflectance spectral changes at the ablation site using optically integrated RFA catheters has been shown to enable accurate prediction of lesion dimensions, ex vivo. Challenges of optical guidance can be due to obtaining reliable measurements under various catheter-tissue contact orientations. In this work, addressed this limitation by assessing the feasibility of monitoring lesion progression using single-fiber reflectance spectroscopy (SFRS). A total of 110 endocardial lesions of various sizes were generated in freshly excised swine right ventricular tissue using a custom-built, irrigated SFRS-RFA catheter. Models were developed for assessing catheter-tissue contact, the presence of nontransmural or transmural lesions and lesion depth percentage. These results support the use of SFRS-based catheters for irrigated lesion assessment and motivate further exploration of using multi-SFRS catheters for omnidirectionality.
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Affiliation(s)
- Soo Young Park
- Department of Electrical Engineering, Columbia University, 500 W. 120 St, New York, NY 10027
| | - Rajinder Singh-Moon
- Department of Electrical Engineering, Columbia University, 500 W. 120 St, New York, NY 10027
| | - Haiqiu Yang
- Department of Electrical Engineering, Columbia University, 500 W. 120 St, New York, NY 10027
| | - Christine Hendon
- Department of Electrical Engineering, Columbia University, 500 W. 120 St, New York, NY 10027
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17
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Qiu J, Lan L, Wang Y. Pulsed Electrical Field in Arrhythmia Treatment: Current Status and Future Directions. Pacing Clin Electrophysiol 2022; 45:1255-1262. [PMID: 36029174 DOI: 10.1111/pace.14586] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 06/09/2022] [Accepted: 06/24/2022] [Indexed: 11/29/2022]
Abstract
Pulsed electrical field (PEF) ablation is a promising novel ablation modality for the treatment of arrhythmia, especially for atrial fibrillation(AF). It relies on electroporation inducing cellular permeabilization by the formation of pores in cell membranes, potentially resulting in cell death. Due to its' non-thermal nature and remarkable tissue selectivity, PEF ablation has be expected largely to replace conventional energy sources, such as radiofrequency (RF) and cryothermy. Up to now, the results in almost all clinical studies of PFA for AF ablation are optimistic, both in terms of effectiveness and safety. The possibility of clinical application of this technology to ventricular tachycardia(VT) has also been supported by several animal models. In this review, we aim to give an overview of the mechanism and technical progress of PFA in cardiac arrhythmia treatment. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Jie Qiu
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lan Lan
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yan Wang
- Division of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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18
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Jiang R, Chen M, Fan J, Yi F, Tang A, Liu X, Zhu W, Liu S, Huang X, Liu Q, Ju W, Zhang X, Li J, He J, Shi L, Zhou G, Wang Y, Fu G, Jiang C. Efficacy of ablation index-guided pulmonary vein isolation in patients with paroxysmal atrial fibrillation. Pacing Clin Electrophysiol 2022; 45:1186-1193. [PMID: 35939332 DOI: 10.1111/pace.14578] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 07/17/2022] [Accepted: 07/28/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Ablation index (AI) is a novel technology of ablation lesion quality to help improve homogeneity of lesion size and continuity. In this study, we aim to evaluate whether AI-guided PVI improves clinical outcomes compared to CF-guided PVI in patients with paroxysmal AF (PAF). METHODS Patients undergoing first-time radiofrequency ablation for PAF were randomized in a 2:1 ratio to two groups: AI-guided PVI and CF-guided PVI. In the AI group, AI ≥500 was recommended at the anterior/superior/inferior walls, 350-400 at the posterior wall, and inter-lesion distance ≤4 mm. The primary endpoint is the freedom from atrial arrhythmia recurrence during 12 months follow-up, without antiarrhythmic drug therapy (ADT). The key secondary endpoints include intra-procedural efficiency and peri-procedural complications. RESULTS 225 patients were randomized (AI group (n = 149) and CF group(n = 76)). First-pass isolation rate in AI group was significantly higher than that in CF group (58.3% vs. 43.4%, p = 0.035). After a median follow-up of 12.2 months, 154/225(68.4%) of patients were free from atrial arrhythmia recurrence without ADT, which was higher in AI group compared with CF group, but without significant difference (71.1% vs. 63.2%, p = 0.253). The incidence of peri-procedural complications is low and without difference between two groups. CONCLUSIONS AI-guided ablation provided higher acute efficacy than CF-guided ablation in PV isolation for patients with paroxysmal AF. The long-term success rate in AI group was higher than CF group, but did not reach statistical significance. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ruhong Jiang
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Minglong Chen
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jie Fan
- The First Peoples' Hospital of Yunnan Province, Yunnan, China
| | - Fu Yi
- Xijing Hospital, Air Force Medical University, Xi'an, China
| | - Anli Tang
- The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xingpeng Liu
- Beijing Chaoyang Hospital affiliated to Capital Medical University, Beijing, China
| | - Wenqing Zhu
- The Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shaowen Liu
- Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaobo Huang
- Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qiang Liu
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Weizhu Ju
- The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xi Zhang
- The First Peoples' Hospital of Yunnan Province, Yunnan, China
| | - Jie Li
- Xijing Hospital, Air Force Medical University, Xi'an, China
| | - Jiangui He
- The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Liang Shi
- Beijing Chaoyang Hospital affiliated to Capital Medical University, Beijing, China
| | - Genqing Zhou
- Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yuegang Wang
- Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Guosheng Fu
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Chenyang Jiang
- Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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19
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Comparison between High-Power Short-Duration and Conventional Ablation Strategy in Atrial Fibrillation: An Updated Meta-Analysis. Cardiovasc Ther 2022; 2022:1065077. [PMID: 35975140 PMCID: PMC9355769 DOI: 10.1155/2022/1065077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/13/2022] [Accepted: 06/08/2022] [Indexed: 11/17/2022] Open
Abstract
High-power short-duration (HPSD) setting during radiofrequency ablation has become an attempt to improve atrial fibrillation (AF) treatment outcomes. This study ought to compare the efficacy, safety, and effectiveness between HPSD and conventional settings. PubMed, Embase, and Cochrane Library were searched. Studies that compared HPSD and conventional radiofrequency ablation settings in AF patients were included while studies performed additional ablations on nonpulmonary vein targets without clear recording were excluded. Data were pooled with random-effect model. Efficacy endpoints include first-pass pulmonary vein isolation (PVI), acute pulmonary vein (PV) reconnection, free from AF, and free from atrial tachycardia (AT) during follow-up. Safety endpoints include esophagus injury rate and major complication rate. Effectiveness endpoints include complete PVI rate, total procedure time, PVI time, and PVI radiofrequency ablation (PVI RF) time. We included 22 studies with 3867 atrial fibrillation patients in total (2393 patients received HPSD radiofrequency ablation). Perioperatively, the HPSD group showed a higher first-pass PVI rate (risk ratio,
,
) and less acute PV reconnection rate (
,
) than the conventional group. During follow-up, free from AF (
,
) or AT (
,
) rate did not differ between HPSD and conventional groups 6-month postsurgery. However, the HPSD group showed both higher free from AF (
,
) and AT (
,
) rate than the conventional group 12-month postsurgery. The esophagus injury (
,
) and major complications (
,
) rates did not differ between the two groups. The HPSD group took shorter total procedure time (
95% CI: -43.10 to -24.33,
), PVI time (
95% CI: -25.00 to -18.21,
), and PVI RF time (
, 95% CI: -14.45 to -13.00,
) than conventional groups while complete procedure rate did not differ between two groups (
,
). HPSD setting during AF radiofrequency ablation has better effectiveness, efficacy, and similar safety compared with the conventional setting.
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20
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Yaftian P, Bandari N, Dargahi J, Hooshiar A. Comparison of Mechanistic and Learning-based Tip Force Estimation on Tendon-driven Soft Robotic Catheters. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2022; 2022:3489-3494. [PMID: 36086243 DOI: 10.1109/embc48229.2022.9871562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Researchers have adopted mechanistic and learning-based approaches for tip force estimation on soft robotic catheters. Typically the literature attributes the mech-anistic methods with more accuracy while indicating the learning-based methods outpace in computational time. In this study, a previously validated mechanistic tip force estimation method was compared with four learning-based methods, i.e. support-vector-regression (SVR), random-forest (RF), Ad-aBoost (Ada), and deep neural network (DNN). The learning-based methods were trained on experimental data acquired from a robotic catheter, developed in-house. The accuracy of force estimation using the five methods were compared with the ground truth forces in a teleoperated catheter manipulation test. Moreover, the capability of the learning-based models in contact detection, i.e., detection of the onset of tip contact, were compared with the ground truth. The results showed that the mechanical model had a mean-absolute error (MAE) of 8.8 mN while the MAE of SVR, RF, Ada, and DNN were 5.6, 5.2, 5.3, and 5.1 mN, respectively. Moreover, the accuracy and precision of the mechanistic model for contact detection was 89.2% and 91.7%, respectively, while these were 97.0%, 97.7%, 97.6%,and 97% and 97.9%, 98.3%, 97.8%, and 98.8% for the SVR, RF, Ada, and DNN, respectively. The comparison showed that with hyper-parameter optimization the learning-based models surpassed the mechanistic model in accuracy and precision, while both method approaches revealed acceptable performance for the proposed application.
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21
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Saraf K, Black N, Garratt CJ, Muhyaldeen SA, Morris GM. Local impedance-guided ablation and ultra-high density mapping versus conventional or contact force-guided ablation with mapping for treatment of cavotricuspid isthmus dependent atrial flutter. Indian Pacing Electrophysiol J 2022; 22:188-194. [PMID: 35427782 PMCID: PMC9263660 DOI: 10.1016/j.ipej.2022.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/01/2022] [Accepted: 03/30/2022] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION - Local impedance (LI) guided ablation as a method of judging lesion effectiveness for cavotricuspid isthmus dependent atrial flutter (CTI-AFL), and ultra-high density (UHD) mapping when breakthrough occurred across an ablation line has not previously been assessed. METHODS This retrospective observational study evaluated patients undergoing CTI-AFL ablation using conventional, contact force (CF) and LI guided strategies. Ablation metrics were collected, and in the LI cohort, the use of UHD mapping for breakthrough evaluated. RESULTS 30 patients were included, 10 per group. Mean total ablation time was significantly shorter with LI (3.2 ± 1.3min) vs conventional (5.6 ± 2.7min) and CF (5.7 ± 2.0min, p = 0.0042). Time from start of ablation to CTI block was numerically shorter with LI (14.2 ± 8.0min) vs conventional and CF (19.7 ± 14.1 and 22.5 ± 19.1min, p = 0.4408). Mean lesion duration was significantly shorter with LI, but there were no differences in the number of lesions required to achieve block, procedural success, complication rates or recurrence. 15/30 patients did not achieve block following first-pass ablation. UHD mapping rapidly identified breakthrough in the five LI patients, including epicardial-endocardial breakthrough (EEB). CONCLUSION - The use of LI during ablation for real-time lesion assessment was as efficacious as the conventional and CF methods. UHD mapping rapidly identified breakthrough, including EEB.
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Affiliation(s)
- Karan Saraf
- Division of Cardiovascular Sciences, The University of Manchester, Oxford Road, Manchester, M139PL, UK; Manchester Heart Centre, Manchester University NHS Foundation Trust, Oxford Road, Manchester, M139WL, UK
| | - Nicholas Black
- Division of Cardiovascular Sciences, The University of Manchester, Oxford Road, Manchester, M139PL, UK; Royal Oldham Hospital, Rochdale Road, Oldham, OL1 2JH, UK
| | - Clifford J Garratt
- Division of Cardiovascular Sciences, The University of Manchester, Oxford Road, Manchester, M139PL, UK; Manchester Heart Centre, Manchester University NHS Foundation Trust, Oxford Road, Manchester, M139WL, UK
| | - Sahrkaw A Muhyaldeen
- Manchester Heart Centre, Manchester University NHS Foundation Trust, Oxford Road, Manchester, M139WL, UK
| | - Gwilym M Morris
- Division of Cardiovascular Sciences, The University of Manchester, Oxford Road, Manchester, M139PL, UK; Manchester Heart Centre, Manchester University NHS Foundation Trust, Oxford Road, Manchester, M139WL, UK.
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22
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El Hajjar AH, Mekhael M, Huang C, Noujaim C, Zhang Y, Kholmovski E, Ayoub T, Lim CH, Marrouche N. Predictors of Lesions Contiguity and Transmurality in Canine Ventricular Models After Catheter Ablation. Front Cardiovasc Med 2022; 9:920539. [PMID: 35811729 PMCID: PMC9260253 DOI: 10.3389/fcvm.2022.920539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 05/23/2022] [Indexed: 11/13/2022] Open
Abstract
Background Interlesion gaps and transmurality of lesions after catheter ablation can precipitate suboptimal efficacy in preventing arrhythmias. Aims We aim to assess predictors of acute transmural lesion formation and the interlesion distance threshold for creating a continuous, chronic scar after ventricular ablation. Materials and Methods Ablation procedures were performed on 7 canines followed by late gadolinium enhancement MRI (LGE-MRI). Transmurality of lesions was assessed by 2 independent operators. Ablation parameters such as duration (s), power (W), temperature (C), contact force (CF) (g), were collected for each ablation point. After 7-12 weeks, LGE-MRI was performed, followed by euthanasia, and heart excision. Some lesions were created in pair. Lesion pairs were spaced 7-21 mm apart as measured by Electroanatomic mapping (EAM), with different operating parameters (power 35 or 50W, duration of energy delivery 10, 20 or 30s and contact force of 10g or above). We performed a logistic regression analysis to determine predictors of transmural lesion formation. Results Eighty-one radiofrequency ablation were performed in total [33 in the Left ventricle (LV) and 48 in the Right ventricle (RV)]. Higher CF was a significant predictor of transmural lesion formation (β = 0.15, OR = 1.16, 95% CI [1.03 – 1.3], p = 0.01), and lesions delivered in the RV were more frequently transmural than lesions delivered in the LV (β = −2.43, OR = 0.09, 95%CI [0.02 – 0.34], p < 0.001). For the paired analysis, thirty-eight lesions were created contiguously: fourteen connected lesions and twenty-four unconnected lesions. EAM distance was significantly larger in unconnected lesions than connected lesions (16.17 ± 0.92 mm vs. 11.51 ± 0.68 mm, respectively, p < 0.05). We concluded that an interlesion distance of less than 10 mm is required to prevent gap formation. Average volumes in unconnected lesions (n = 24) at the acute and chronic stages were 0.55 ± 0.11 cm3 and 0.20 ± 0.02 cm3, respectively. On average, lesion volumes were 64% (p < 0.05) smaller at the chronic stage compared to the acute stage. Among connected lesions (n = 14), we observed a volume of 1.19 ± 0.8 cm3 and 0.39 ± 0.15 cm3 at the acute and chronic stages, respectively. These connected lesions reduced in volume by 67% on average. Conclusion To create contiguous scars on the ventricular endocardial surface, paired lesions should be spaced less than ten millimeters apart. Higher contact force should be used in ventricular ablation to create transmural lesions.
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Affiliation(s)
- Abdel Hadi El Hajjar
- Department of Cardiology, Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, United States
| | - Mario Mekhael
- Department of Cardiology, Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, United States
| | - Chao Huang
- Department of Cardiology, Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, United States
| | - Charbel Noujaim
- Department of Cardiology, Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, United States
| | - Yichi Zhang
- Department of Cardiology, Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, United States
| | - Eugene Kholmovski
- Department of Cardiology, Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, United States
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States
| | - Tarek Ayoub
- Department of Cardiology, Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, United States
| | - Chan Ho Lim
- Department of Cardiology, Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, United States
| | - Nassir Marrouche
- Department of Cardiology, Tulane Research Innovation for Arrhythmia Discoveries, Tulane University School of Medicine, New Orleans, LA, United States
- *Correspondence: Nassir Marrouche,
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23
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Park SY, Yang H, Marboe C, Ziv O, Laurita K, Rollins A, Saluja D, Hendon CP. Cardiac endocardial left atrial substrate and lesion depth mapping using near-infrared spectroscopy. BIOMEDICAL OPTICS EXPRESS 2022; 13:1801-1819. [PMID: 35519253 PMCID: PMC9045901 DOI: 10.1364/boe.451547] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/18/2022] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Atrial fibrillation (AF) is a rapid irregular electrical activity in the upper chamber and the most common sustained cardiac arrhythmia. Many patients require radiofrequency ablation (RFA) therapy to restore sinus rhythm. Pulmonary vein isolation requires distinguishing normal atrial wall from the pulmonary vein tissue, and atrial substrate ablation requires differentiating scar tissue, fibrosis, and adipose tissue. However, current anatomical mapping methods for strategically locating ablation sites by identifying structural substrates in real-time are limited. An intraoperative tool that accurately provides detailed structural information and classifies endocardial substrates could help improve RF guidance during RF ablation therapy. In this work, we propose a 7F NIRS integrated ablation catheter and demonstrate endocardial mapping on ex vivo swine (n = 12) and human (n = 5) left atrium (LA). First, pulmonary vein (PV) sleeve, fibrosis and ablation lesions were identified with NIRS-derived contrast indices. Based on these key spectral features, classification algorithms identified endocardial substrates with high accuracy (<11% error). Then, a predictive model for lesion depth was evaluated on classified lesions. Model predictions correlated well with histological measurements of lesion dimensions (R = 0.984). Classified endocardial substrates and lesion depth were represented in 2D spatial maps. These results suggest NIRS integrated mapping catheters can serve as a complementary tool to the current electroanatomical mapping system to improve treatment efficacy.
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Affiliation(s)
- Soo Young Park
- Department of Electrical Engineering, Columbia University, New York, USA
| | - Haiqiu Yang
- Department of Electrical Engineering, Columbia University, New York, USA
| | - Charles Marboe
- Department of Cell Biology and Pathology, Columbia University Irving Medical Center, New York, USA
| | - Ohad Ziv
- Department of Medicine, Cardiology Division, MetroHealth Hospital, Ohio, USA
| | - Kenneth Laurita
- Department of Medicine, Cardiology Division, MetroHealth Hospital, Ohio, USA
- Department of Biomedical Engineering, Case Western Reserve University, Ohio, USA
| | - Andrew Rollins
- Department of Biomedical Engineering, Case Western Reserve University, Ohio, USA
| | - Deepak Saluja
- Department of Medicine, Cardiology Division, Columbia University Irving Medical Center, New York, USA
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24
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Asvestas D, Sousonis V, Kotsovolis G, Karanikas S, Xintarakou A, Sakadakis E, Rigopoulos AG, Kalogeropoulos AS, Vardas P, Tzeis S. Cavotricuspid isthmus ablation guided by force-time integral - A randomized study. Clin Cardiol 2022; 45:503-508. [PMID: 35301726 PMCID: PMC9045076 DOI: 10.1002/clc.23805] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/13/2022] [Accepted: 02/17/2022] [Indexed: 11/17/2022] Open
Abstract
Background Force‐time integral (FTI) is an ablation marker of lesion quality and transmurality. A target FTI of 400 gram‐seconds (gs) has been shown to improve durability of pulmonary vein isolation, following atrial fibrillation ablation. However, relevant targets for cavotricuspid isthmus (CTI) ablation are lacking. Hypothesis We sought to investigate whether CTI ablation with 600 gs FTI lesions is associated with reduced rate of transisthmus conduction recovery compared to 400 gs lesions. Methods Fifty patients with CTI‐dependent flutter were randomized to ablation using 400 gs (FTI400 group, n = 26) or 600 gs FTI lesions (FTI600 group, n = 24). The study endpoint was spontaneous or adenosine‐mediated recovery of transisthmus conduction, after a 20‐min waiting period. Results The study endpoint occurred in five patients (19.2%) in group FTI400 and in four patients (16.7%) in group FTI600, p = .81. First‐pass CTI block was similar in both groups (50% in FTI400 vs. 54.2% in FTI600, p = .77). There were no differences in the total number of lesions, total ablation time, procedure time and fluoroscopy duration between the two groups. There were no major complications in any group. In the total population, patients not achieving first‐pass CTI block had significantly higher rate of acute CTI conduction recovery, compared to those with first‐pass block (29.2% vs. 7.7% respectively, p = .048). Conclusions CTI ablation using 600 gs FTI lesions is not associated with reduced spontaneous or adenosine‐mediated recurrence of transisthmus conduction, compared to 400 gs lesions.
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Affiliation(s)
| | | | - George Kotsovolis
- Department of Cardiology, Mitera Hospital, Hygeia Group, Athens, Greece
| | - Stavros Karanikas
- Department of Cardiology, Mitera Hospital, Hygeia Group, Athens, Greece
| | | | | | | | | | - Panos Vardas
- Department of Cardiology, Mitera Hospital, Hygeia Group, Athens, Greece
| | - Stylianos Tzeis
- Department of Cardiology, Mitera Hospital, Hygeia Group, Athens, Greece
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Themistoclakis S, Calzolari V, De Mattia L, China P, Russo AD, Fassini G, Casella M, Caporaso I, Indiani S, Addis A, Basso C, Della Barbera M, Thiene G, Tondo C. In vivo Lesion Index (LSI) validation in percutaneous radiofrequency catheter ablation. J Cardiovasc Electrophysiol 2022; 33:874-882. [PMID: 35262242 DOI: 10.1111/jce.15442] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 01/06/2022] [Accepted: 01/30/2022] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Lesion Index (LSI) has been developed to predict lesion efficacy during radiofrequency (RF) catheter ablation. However, its value in predicting lesions size has still to be established. The aim of our study was to assess the lesions size reproducibility for pre-specified values of LSI reached during RF delivery in an in vivo beating heart. METHODS Ablation lesions were created with different values of LSI in 7 domestic pigs by means of a contact force sensing catheter (TactiCathTM , Abbott). Lesions were identified during RF delivery by means of a 3D mapping system (EnSiteTM Precision, Abbott) and measured after heart explantation. Histology was carried out after gross examination on the first 3 lesions to confirm the accuracy of the macroscopic evaluation. RESULTS A total of 64 myocardial lesions were created. Thirty-nine lesions were excluded from the analysis for the following reasons: histological confirmation of macroscopic lesion measurement (n=3), transmurality (n=24), unfavorable anatomic position (n=10), not macroscopically identifiable (n=2). In a final set of 25 non-transmural lesions, injury width and depth were respectively 4.6±0.6 mm and 2.6±0.8 mm for LSI=4, 7.3±0.8 mm and 4.7±0.6 mm for LSI=5, and 8.6±1.2 mm and 7.2±1.1 mm for LSI=6. A strong linear correlation was observed between LSI and lesion width (r=0.87, p<0.00001) and depth (r=0.89, p<0.00001). Multiple linear regression analysis identified LSI as the only ablation parameter that significantly predicted lesion width (p<0.001) and depth (p<0.001). CONCLUSION In our in vivo study, LSI proved highly predictive of lesion size and depth. This article is protected by copyright. All rights reserved.
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Affiliation(s)
| | | | - Luca De Mattia
- Ospedale Ca'Foncello-ULSS2 Marca Trevigiana, Treviso, Italy
| | - Paolo China
- Ospedale dell'Angelo-ULSS3 Serenissima, Mestre-Venice, Italy
| | | | - Gaetano Fassini
- Heart Rhythm Center, Monzino Cardiac Center, IRCCS, Milan, Italy
| | - Michela Casella
- Heart Rhythm Center, Monzino Cardiac Center, IRCCS, Milan, Italy
| | - Igor Caporaso
- Abbott Medical Italia S.p.A., Sesto San Giovanni, Italy
| | | | - Alessandro Addis
- CRABCC, Biotechnology Research Center for Cardiothoracic Applications, Rivolta D'Adda, Italy
| | - Cristina Basso
- Cardiovascular Pathology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Mila Della Barbera
- Cardiovascular Pathology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Gaetano Thiene
- Cardiovascular Pathology, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Claudio Tondo
- Heart Rhythm Center, Monzino Cardiac Center, IRCCS, Milan, Italy.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
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26
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Park SY, Singh-Moon R, Yang H, Saluja D, Hendon C. Quantification of irrigated lesion morphology using near-infrared spectroscopy. Sci Rep 2021; 11:20160. [PMID: 34635764 PMCID: PMC8505541 DOI: 10.1038/s41598-021-99725-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 09/29/2021] [Indexed: 12/20/2022] Open
Abstract
There are currently limited means by which lesion formation can be confirmed during radiofrequency ablation procedures. The purpose of this study was to evaluate the use of NIRS-integrated RFA catheters for monitoring irrigated lesion progression, ex vivo and in vivo. Open-irrigated NIRS-ablation catheters with optical fibers were fabricated to sample tissue diffuse reflectance. Spectra from 44 irrigated lesions and 44 non-lesion sites from ex vivo swine hearts (n = 15) were used to train and evaluate a predictive model for lesion dimensions based on key spectral features. Additional studies were performed in diluted blood to assess NIRS signatures of catheter-tissue contact status. Finally, the potential of NIRS-RFA catheters for guiding lesion delivery was evaluated in a set of in vivo pilot studies conducted in healthy pigs (n = 4). Model predictions for lesion depth (R = 0.968), width (R = 0.971), and depth percentage (R = 0.924) correlated well with measured lesion dimensions. In vivo deployment in preliminary trials showed robust translational consistency of contact discrimination (P < 0.0001) and lesion depth parameters (< 3% error). NIRS empowered catheters are well suited for monitoring myocardial response to RF ablation and may provide useful intraprocedural feedback for optimizing treatment efficacy alongside current practices.
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Affiliation(s)
- Soo Young Park
- Department of Electrical Engineering, Columbia University, 500 West 120th Street, New York, NY, 10027, USA
| | - Rajinder Singh-Moon
- Department of Electrical Engineering, Columbia University, 500 West 120th Street, New York, NY, 10027, USA
| | - Haiqiu Yang
- Department of Electrical Engineering, Columbia University, 500 West 120th Street, New York, NY, 10027, USA
| | - Deepak Saluja
- Department of Medicine (Cardiology), Columbia University College of Physicians and Surgeons, 630 W. 168th St, New York, NY, 10032, USA
| | - Christine Hendon
- Department of Electrical Engineering, Columbia University, 500 West 120th Street, New York, NY, 10027, USA.
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27
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Habibi M, Berger RD, Calkins H. Radiofrequency ablation: technological trends, challenges, and opportunities. Europace 2021; 23:511-519. [PMID: 33253390 DOI: 10.1093/europace/euaa328] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/04/2020] [Indexed: 12/15/2022] Open
Abstract
More than three decades have passed since utilization of radiofrequency (RF) ablation in the treatment of cardiac arrhythmias. Although several limitations and challenges still exist, with improvements in catheter designs and delivery of energy the way we do RF ablation now is much safer and more efficient. This review article aims to give an overview on historical advances on RF ablation and challenges in performing safe and efficient ablation.
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Affiliation(s)
- Mohammadali Habibi
- Division of Cardiology, Section for Cardiac Electrophysiology, The Johns Hopkins University, 1800 Orleans Street, Sheikh Zayed Tower 7125R, Baltimore, MD 21287, USA
| | - Ronald D Berger
- Division of Cardiology, Section for Cardiac Electrophysiology, The Johns Hopkins University, 1800 Orleans Street, Sheikh Zayed Tower 7125R, Baltimore, MD 21287, USA
| | - Hugh Calkins
- Division of Cardiology, Section for Cardiac Electrophysiology, The Johns Hopkins University, 1800 Orleans Street, Sheikh Zayed Tower 7125R, Baltimore, MD 21287, USA
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28
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Comparison of lesion characteristics between conventional and high-power short-duration ablation using contact force-sensing catheter in patients with paroxysmal atrial fibrillation. BMC Cardiovasc Disord 2021; 21:387. [PMID: 34372779 PMCID: PMC8353766 DOI: 10.1186/s12872-021-02196-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 07/28/2021] [Indexed: 01/05/2023] Open
Abstract
Background Transmural lesion creation is essential for effective atrial fibrillation (AF) ablation. Lesion characteristics between conventional energy and high-power short-duration (HPSD) setting in contact force-guided (CF) ablation for AF remained unclear.
Methods Eighty consecutive AF patients who received CF with conventional energy setting (power control: 25–30 W, force–time integral = 400 g s, n = 40) or with HPSD (power control: 40–50 W, 10 s, n = 40) ablation were analyzed. Of them, 15 patients in each conventional and HPSD group were matched by age and gender respectively for ablation lesions analysis. Type A and B lesions were defined as a lesion with and without significant voltage reduction after ablation, respectively. The anatomical distribution of these lesions and ablation outcomes among the 2 groups were analyzed.
Results 1615 and 1724 ablation lesions were analyzed in the conventional and HPSD groups, respectively. HPSD group had a higher proportion of type A lesion compared to conventional group (P < 0.01). In the conventional group, most type A lesions were at the right pulmonary vein (RPV) posterior wall (50.2%) whereas in the HPSD group, most type A lesions were at the RPV anterior wall (44.0%) (P = 0.04). The procedure time and ablation time were significantly shorter in the HPSD group than that in the conventional group (91.0 ± 12.1 vs. 124 ± 14.2 min, P = 0.03; 30.7 ± 19.2 vs. 57.8 ± 21 min, P = 0.02, respectively). At a mean follow-up period of 11 ± 1.4 months, there were 13 and 7 patients with recurrence in conventional and HPSD group respectively (P = 0.03). Conclusion Optimal ablation lesion characteristics and distribution after conventional and HPSD ablation differed significantly. HPSD ablation had shorter ablation time and lower recurrence rate than did conventional ablation.
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29
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Ábrahám P, Ambrus M, Herczeg S, Szegedi N, Nagy KV, Salló Z, Osztheimer I, Széplaki G, Tahin T, Merkely B, Gellér L. Similar outcomes with manual contact force ablation catheters and traditional catheters in the treatment of outflow tract premature ventricular complexes. Europace 2021; 23:596-602. [PMID: 33576378 PMCID: PMC8025084 DOI: 10.1093/europace/euaa393] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/07/2020] [Indexed: 11/12/2022] Open
Abstract
Aims Unlike in atrial fibrillation ablation, there is a lack of appropriately sized and properly designed studies regarding outflow tract (OT) premature ventricular complex (PVC) ablation outcomes with contact force sensing (CFS) catheters. We aimed to compare the acute success-, complication-, and long-term recurrence rates of manual CFS catheters with traditional irrigated catheters (T) in OT PVC ablation. Methods and results Single-centre, propensity-matched data of 75–75 patients ablated for right-sided OT (RVOT) or left-sided OT (LVOT) PVCs in 2015–17 with CFS or T catheters were compared. Acute success rate, peri-procedural complications, post-procedural daily PVC burden, and long-term recurrence rates were compared on intention-to-treat basis. Acute success rate equalled 80% in both groups, with no difference in force values in the CFS group comparing successful or failed cases [12.0 (8.75–17.0) vs. 16.0 (10.25–22.25) g, P = 0.21]. There were three cases of pseudo-aneurysm and one cardiac tamponade. PVC burden fell significantly from baseline 22 (15–30)% to 2 (0–10)% (P < 0.0001), with no difference between catheter types [CFS: 1 (0–7)% vs. T: 4 (1–12) %; P = 0.21]. There was no significant difference in recurrence-free survival of CFS and T catheters (58 vs. 59%, P = 0.29) during 12 months of follow-up, respectively. Recurrence in the CFS group did not differ either by the force exerted below or above the median value of 12 g (P = 0.66). Conclusion Both types of catheters can effectively reduce OT PVC burden with minimal serious complication rates. Ablation with CFS or T catheters gives similar acute- and long-term results.
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Affiliation(s)
- Pál Ábrahám
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
- Corresponding author. Tel: +36 20 666 3875; fax: +36 1 458 6842. E-mail address:
| | - Mercédesz Ambrus
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
| | - Szilvia Herczeg
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
| | - Nándor Szegedi
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
| | - Klaudia Vivien Nagy
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
| | - Zoltán Salló
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
| | - István Osztheimer
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
| | - Gábor Széplaki
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
| | - Tamás Tahin
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
| | - Béla Merkely
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
| | - László Gellér
- Department of Cardiology, Semmelweis University Heart and Vascular Centre, Városmajor Street 68, H-1122 Budapest, Hungary
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30
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Lindemann F, Nedios S, Seewöster T, Hindricks G. [Pulmonary vein isolation in atrial fibrillation using pulsed field ablation]. Herz 2021; 46:318-322. [PMID: 34142178 DOI: 10.1007/s00059-021-05047-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2021] [Indexed: 01/19/2023]
Abstract
Atrial fibrillation is the most common supraventricular arrhythmia with increasing incidence and prevalence. Until now, thermal energy sources such as radiofrequency or cryoablation have been used for pulmonary vein isolation of atrial fibrillation but these have led to indiscriminate tissue destruction in the target area. Pulsed field ablation (PFA) is an energy modality that does not utilize thermal effects. An ultrarapid electric field produces irreversible changes in cell membrane pores (irreversible electroporation) culminating in cell death. The myocardium is very sensitive to PFA compared to the esophagus, the pulmonary veins or the phrenic nerve. Consequently, it is possible to perform effective ablation of the pulmonary veins in a very short time and to make the treatment time more effective without causing relevant collateral damage. The treatment offers a potential paradigm shift from catheter ablation of cardiac arrhythmia.
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Affiliation(s)
- F Lindemann
- Abteilung für Elektrophysiologie, Herzzentrum Leipzig, Strümpellstr. 39, 04289, Leipzig, Deutschland.
| | - S Nedios
- Abteilung für Elektrophysiologie, Herzzentrum Leipzig, Strümpellstr. 39, 04289, Leipzig, Deutschland
| | - T Seewöster
- Abteilung für Elektrophysiologie, Herzzentrum Leipzig, Strümpellstr. 39, 04289, Leipzig, Deutschland
| | - G Hindricks
- Abteilung für Elektrophysiologie, Herzzentrum Leipzig, Strümpellstr. 39, 04289, Leipzig, Deutschland
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31
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Does Unidirectional Block Exist after a Radiofrequency Line Creation? Insights from Ultra-High-Density Mapping (The UNIBLOCK Study). J Clin Med 2021; 10:jcm10112512. [PMID: 34204104 PMCID: PMC8201044 DOI: 10.3390/jcm10112512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 06/04/2021] [Accepted: 06/04/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Whether unidirectional conduction block (UB) can be observed after creation of a radiofrequency (RF) line is still debated. Previous studies reported a prevalence of 9 to 33% of UB, but the assessment was performed using a point-by-point recording across the line. Ultra-high-density (UHD) system may bring some new insights on the exact prevalence of UB. PURPOSE A prospective study was conducted to assess the prevalence of UB and bidirectional block (BB) using UHD system after RF line creation. METHODS Patients referred for atrial RF ablation procedure were included in this multicenter prospective study. UHD maps were performed by pacing both sides of the created line. RESULTS A total of 80 maps were created in 40 patients (67 ± 12 years, 70% male) by pacing (mean cycle length 600 ± 57 ms) from both sides of the cavotricuspid isthmus line. After a 47 ± 17 min waiting time after the last RF application, UHD maps (mean number of 4842 ± 5010 electrograms, acquired during 6 ± 5 min) showed that BB was unambiguously confirmed on all of them. UB was not observed in any map. After a mean follow-up of 12 ± 4 months, 6 (14%) patients experienced an arrhythmia recurrence. CONCLUSION After creation of an RF line, no case of UB was observed using UHD mapping, suggesting that the presence of a conduction block along a RF line is always associated with a block in the opposite direction.
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Shi LB, Wang YC, Chu SY, De Bortoli A, Schuster P, Solheim E, Chen J. The impacts of contact force, power and application time on ablation effect indicated by serial measurements of impedance drop in both conventional and high-power short-duration ablation settings of atrial fibrillation. J Interv Card Electrophysiol 2021; 64:333-339. [PMID: 33891228 PMCID: PMC9399015 DOI: 10.1007/s10840-021-00990-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/05/2021] [Indexed: 11/08/2022]
Abstract
Background This study aimed to clarify the interrelationship and additive effects of contact force (CF), power and application time in both conventional and high-power short-duration (HPSD) settings. Methods Among 38 patients with paroxysmal atrial fibrillation who underwent first-time pulmonary vein isolation, 787 ablation points were collected at the beginning of the procedure at separate sites. Energy was applied for 60 s under power outputs of 25, 30 or 35 W (conventional group), or 10 s when using 50 W (HPSD group). An impedance drop (ID) of 10 Ω was regarded as a marker of adequate lesion formation. Results ID ≥ 10 Ω could not be achieved with CF < 5 g under any power setting. With CF ≥ 5 g, ID could be enhanced by increasing power output or prolonging ablation time. ID for 30 and 35 W was greater than for 25 W (p < 0.05). Ablation with 35 W resulted in greater ID than with 30 W only when CF of 10–20 g was applied for 20–40 s (p < 0.05). Under the same power output, ID increased with CF level at different time points. The higher the CF, the shorter the time needed to reach ID of 10 Ω and maximal ID. ID correlated well with ablation index under each power, except for lower ID values at 25 W. ID with 50 W for 10 s was equivalent to that with 25 W for 40 s, but lower than that with 30 W for 40 s or 35 W for 30 s. Conclusions CF of at least 5 g is required for adequate ablation effect. With CF ≥ 5g, CF, power output, and ablation time can compensate for each other. Time to reach maximal ablation effect can be shortened by increasing CF or power. The effect of HPSD ablation with 50 W for 10 s is equivalent to conventional ablation with 25 W for 40 s and 30–35 W for 20–30 s in terms of ID.
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Affiliation(s)
- Li-Bin Shi
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Heart Disease, Haukeland University Hospital, N-5021, Bergen, Norway
| | - Yu-Chuan Wang
- Department of Heart Disease, Haukeland University Hospital, N-5021, Bergen, Norway.,Peking University First Hospital, Beijing, China
| | - Song-Yun Chu
- Department of Heart Disease, Haukeland University Hospital, N-5021, Bergen, Norway.,Peking University First Hospital, Beijing, China
| | | | - Peter Schuster
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Heart Disease, Haukeland University Hospital, N-5021, Bergen, Norway
| | - Eivind Solheim
- Department of Heart Disease, Haukeland University Hospital, N-5021, Bergen, Norway
| | - Jian Chen
- Department of Clinical Science, University of Bergen, Bergen, Norway. .,Department of Heart Disease, Haukeland University Hospital, N-5021, Bergen, Norway.
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33
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Sørensen SK, Johannessen A, Worck R, Hansen ML, Hansen J. Radiofrequency Versus Cryoballoon Catheter Ablation for Paroxysmal Atrial Fibrillation: Durability of Pulmonary Vein Isolation and Effect on Atrial Fibrillation Burden: The RACE-AF Randomized Controlled Trial. Circ Arrhythm Electrophysiol 2021; 14:e009573. [PMID: 33835823 PMCID: PMC8136462 DOI: 10.1161/circep.120.009573] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Supplemental Digital Content is available in the text. Background: Recurrent paroxysmal atrial fibrillation (AF) after catheter ablation is presumably caused by failure to achieve durable pulmonary vein isolation (PVI). The primary methods of PVI are radiofrequency catheter ablation (RF) and cryoballoon catheter ablation (CRYO), but these methods have not been directly compared with respect to PVI durability and the effect thereof on AF burden (% of time in AF). Methods: Accordingly, we performed a randomized trial including 98 patients (68% male, 61 [55–67] years) with paroxysmal AF assigned 1:1 to PVI by contact-force sensing, irrigated radiofrequency catheter, or second-generation cryoballoon catheter. Implantable cardiac monitors were inserted ≥1 month before PVI for assessment of AF burden and recurrence, and all patients, irrespective of AF recurrence, underwent a second procedure 4 to 6 months after PVI to determine PVI durability. Results: In the second procedure, 152 out of 199 (76%) pulmonary veins (PVs) were found durably isolated after RF and 161 out of 200 (81%) after CRYO (P=0.32), corresponding to durable isolation of all veins in 47% of patients in both groups (P=1.0). Median AF burden before PVI was 5.4% (interquartile range, 0.5%–13.0%) versus 4.0% (0.6%–18.1%), RF versus CRYO (P=0.71), and reduced to 0.0% (0.0%–0.1%) and 0.0% (0.0%–0.5%), respectively (P=0.58)—a reduction of 99.9% (92.9%–100.0%) and 99.3% (85.9%–100.0%; P=0.36). AF burden after PVI significantly correlated to the number of durably isolated PVs (P<0.01), but 9 out of 45 (20%) patients with durable isolation of all veins had recurrence of AF within 4 to 6 months after PVI (excluding a 3-month blanking period). Conclusions: PVI by RF and CRYO produce similar moderate to high PVI durability. Both treatments lead to marked reductions in AF burden, which is related to the number of durably isolated PVs. However, for one-fifth of paroxysmal AF patients, complete and durable PVI was not sufficient to prevent even short-term AF recurrence. Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT03805555.
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Affiliation(s)
- Samuel K Sørensen
- Copenhagen University Hospital Gentofte, Gentofte Hospitalsvej 1, Hellerup, Denmark
| | - Arne Johannessen
- Copenhagen University Hospital Gentofte, Gentofte Hospitalsvej 1, Hellerup, Denmark
| | - René Worck
- Copenhagen University Hospital Gentofte, Gentofte Hospitalsvej 1, Hellerup, Denmark
| | - Morten L Hansen
- Copenhagen University Hospital Gentofte, Gentofte Hospitalsvej 1, Hellerup, Denmark
| | - Jim Hansen
- Copenhagen University Hospital Gentofte, Gentofte Hospitalsvej 1, Hellerup, Denmark
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Hansom SP, Alqarawi W, Birnie DH, Golian M, Nery PB, Redpath CJ, Klein A, Green MS, Davis DR, Sheppard-Perkins E, Ramirez FD, Nair GM, Sadek MM. High-power, short-duration atrial fibrillation ablation compared with a conventional approach: Outcomes and reconnection patterns. J Cardiovasc Electrophysiol 2021; 32:1219-1228. [PMID: 33751694 DOI: 10.1111/jce.14989] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/13/2021] [Accepted: 02/01/2021] [Indexed: 01/05/2023]
Abstract
BACKGROUND The effectiveness, safety, and pulmonary vein (PV) reconnection patterns of point-by-point high-power, short-duration (HPSD) ablation relative to conventional force-time integral (FTI)-guided strategies for atrial fibrillation (AF) ablation are unknown. OBJECTIVES To compare 1-year freedom from atrial arrhythmia (AA), complication rates, procedural times, and PV reconnection patterns with HPSD AF AF ablation versus an FTI-guided low-power, long-duration (LPLD) strategy. METHODS We compared consecutive patients undergoing a first ablation procedure for paroxysmal or persistent AF. The HPSD protocol utilized a power of 50 W and durations of 6-8 s posteriorly and 8-10 s anteriorly. The LPLD protocol was FTI-guided with a power of ≤25 W posteriorly (FTI ≥ 300g·s) and ≤35 W anteriorly (FTI ≥ 400g·s). RESULTS In total, 214 patients were prospectively included (107 HPSD, 107 LPLD). Freedom from AA at 1 year was achieved in 79% in the HPSD group versus 73% in the LPLD group (p = .339; adjusted hazard ratio with HPSD, 0.67; 95% confidence interval, 0.36-1.23; p < .004 for non-inferiority). Procedure duration was shorter in the HPSD group (229 ± 60 vs. 309 ± 77 min; p < .005). Patients undergoing repeat ablation had a higher propensity for reconnection at the right PV carina in the HPSD group compared with the LPLD group (14/30 = 46.7% vs. 7/34 = 20.6%; p = .035). There were no differences in complication rates. CONCLUSION HPSD AF ablation resulted in similar freedom from AAs at 1 year, shorter procedure times, and a similar safety profile when compared with an LPLD ablation strategy. Patients undergoing HPSD ablation required more applications at the right carina to achieve isolation, and had a significantly higher rate of right carinal reconnections at redo procedures.
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Affiliation(s)
- Simon P Hansom
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - Wael Alqarawi
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - David H Birnie
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - Mehrdad Golian
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - Pablo B Nery
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - Calum J Redpath
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - Andres Klein
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - Martin S Green
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - Darryl R Davis
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - Eva Sheppard-Perkins
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - F Daniel Ramirez
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - Girish M Nair
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
| | - Mouhannad M Sadek
- Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Canada
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Stewart MT, Haines DE, Miklavčič D, Kos B, Kirchhof N, Barka N, Mattison L, Martien M, Onal B, Howard B, Verma A. Safety and chronic lesion characterization of pulsed field ablation in a Porcine model. J Cardiovasc Electrophysiol 2021; 32:958-969. [PMID: 33650743 PMCID: PMC8048690 DOI: 10.1111/jce.14980] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 01/06/2021] [Accepted: 01/23/2021] [Indexed: 12/11/2022]
Abstract
Background Pulsed field ablation (PFA) has been identified as an alternative to thermal‐based ablation systems for treatment of atrial fibrillation patients. The objective of this Good Laboratory Practice (GLP) study was to characterize the chronic effects and safety of overlapping lesions created by a PFA system at intracardiac locations in a porcine model. Methods A circular catheter with nine gold electrodes was used for overlapping low‐ or high‐dose PFA deliveries in the superior vena cava (SVC), right atrial appendage (RAA), and right superior pulmonary vein (RSPV) in six pigs. Electrical isolation was evaluated acutely and chronic lesions were assessed via necropsy and histopathology after 4‐week survival. Acute and chronic safety data were recorded peri‐ and post‐procedurally. Results No animal experienced ventricular arrhythmia during PFA delivery, and there was no evidence of periprocedural PFA‐related adverse events. Lesions created in all anatomies resulted in electrical isolation postprocedure. Lesions were circumferential, contiguous, and transmural, with all converting into consistent lines of chronic replacement fibrosis, regardless of trabeculated or smooth endocardial surface structure. Ablations were non‐thermally generated with only minimal post‐delivery temperature rises recorded at the electrodes. There was no evidence of extracardiac damage, stenosis, aneurysms, endocardial disruption, or thrombus. Conclusion PFA deliveries to the SVC, RAA, and RSPV resulted in complete circumferential replacement fibrosis at 4‐week postablation with an excellent chronic myocardial and collateral tissue safety profile. This GLP study evaluated the safety and efficacy of a dosage range in preparation for a clinical trial and characterized the non‐thermal nature of PFA.
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Affiliation(s)
- Mark T Stewart
- Cardiac Rhythm Management, Medtronic, Inc., Minneapolis, Minnesota, USA
| | - David E Haines
- Beaumont Health System, Div of Cardiology, EP Services, Oakland University William Beaumont School of Medicine, Royal Oaks, Michigan, USA
| | - Damijan Miklavčič
- Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia
| | - Bor Kos
- Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia
| | - Nicole Kirchhof
- Cardiac Rhythm Management, Medtronic, Inc., Minneapolis, Minnesota, USA
| | - Noah Barka
- Cardiac Rhythm Management, Medtronic, Inc., Minneapolis, Minnesota, USA
| | - Lars Mattison
- Cardiac Rhythm Management, Medtronic, Inc., Minneapolis, Minnesota, USA
| | - Matt Martien
- Cardiac Rhythm Management, Medtronic, Inc., Minneapolis, Minnesota, USA
| | - Birce Onal
- Cardiac Rhythm Management, Medtronic, Inc., Minneapolis, Minnesota, USA
| | - Brian Howard
- Cardiac Rhythm Management, Medtronic, Inc., Minneapolis, Minnesota, USA
| | - Atul Verma
- Southlake Regional Health Centre, Arrhythmia Services, University of Toronto, Newmarket, Ontario, Canada
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36
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Efficiency, Safety, and Efficacy of High-Power Short-Duration Radiofrequency Ablation in Patients with Atrial Fibrillation. Cardiol Res Pract 2021; 2021:8821467. [PMID: 33643666 PMCID: PMC7902128 DOI: 10.1155/2021/8821467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/14/2020] [Accepted: 12/19/2020] [Indexed: 11/18/2022] Open
Abstract
Pulmonary vein isolation (PVI) is the cornerstone therapy of atrial fibrillation (AF). Radiofrequency catheter ablation (RFCA) is performed using a point-by-point method to achieve durable PVI. However, this procedure remains complex and time-consuming, and the long-term clinical outcomes are still not satisfactory. Recently, there has been increasing interest in the clinical application of high-power short-duration (HPSD) approaches in the field of RFCA. HPSD ablation, distinguishing it from the conventional ablation strategy, delivers RF energy at a high power and saves the dwell time at each site. It is unknown whether the HPSD approach can bring some gratifying changes in the field of RF energy ablation. A number of experimental studies and clinical studies have been conducted regarding this topic. The review aimed to summarize the research findings and evaluate the procedural efficiency, safety, and clinical outcomes of the HPSD approach based on the evidence available to date.
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Tohoku S, Fukunaga M, Nagashima M, Korai K, Hirokami J, Yamamoto K, Takeo A, Niu H, Ando K, Hiroshima K. Clinical impact of eliminating nonpulmonary vein triggers of atrial fibrillation and nonpulmonary vein premature atrial contractions at initial ablation for persistent atrial fibrillation. J Cardiovasc Electrophysiol 2020; 32:224-234. [PMID: 33270298 DOI: 10.1111/jce.14830] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 10/29/2020] [Accepted: 11/15/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND The role of nonpulmonary vein (PV) triggers ablation in persistent atrial fibrillation (PEAF) was suggested but it is still under debate. OBJECTIVES We aimed to assess the effectiveness of non-PV trigger-targeted ablation for patients with PEAF. METHODS Consecutive patients with PEAF undergoing catheter ablation (CA) between January 2015 and April 2017 were enrolled. Isoproterenol plus adenosine challenge was performed to provoke non-PV triggers. Non-PV triggers were defined as the trigger beats inducing AF (non-PV AF triggers) and/or frequent premature contractions (non-PV PACs) from other than PVs. Three groups were defined: Group 1 (n = 186) without non-PV triggers; Group 2 (n = 65) with non-PV triggers that could be completely eliminated with CA; Group 3 (n = 49) with non-PV triggers still inducible after CA. The primary endpoint was freedom from any atrial tachyarrhythmia (ATa) recurrence. RESULTS A total of 300 patients (230 males, age 64 ± 10) were enrolled. The mean follow-up period was 27 ± 10 months. Freedom from ATa recurrence at 1 and 2 years were significantly lower in Group 3 compared to the other two groups (Group 1; 74.7%, 67.2% vs. Group 2; 75.8%, 68.3% vs. Group 3: 52.1%, 38.6%, p = .0005), irrespective of the type of non-PV triggers (non-PV AF triggers vs. non-PV PACs). On multivariate analysis, unsuccessful elimination of non-PV triggers was an independent predictor for ATa recurrence (hazard ratio = 1.80, 95% confidence interval = 1.07-2.95, p = .026). CONCLUSION Successful non-PV triggers elimination can improve the ATa recurrence rate in PEAF ablation. ATa recurrence rate is higher, if non-PV AF triggers or even non-PV PACs remain in patients with PEAF.
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Affiliation(s)
- Shota Tohoku
- Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan.,Abteilung für Kardiologie, Medizinische Klinik III, Agaplesion Markus Krankenhaus, Cardioangiologisches Centrum Bethanien, Frankfurt Academy For Arrhythmias, Frankfurt am Main, Germany
| | - Masato Fukunaga
- Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan
| | - Michio Nagashima
- Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan
| | - Kengo Korai
- Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan
| | - Jun Hirokami
- Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan
| | - Kei Yamamoto
- Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan
| | - Ayaka Takeo
- Department of Clinical Engineering, Kokura Memorial Hospital, Kitakyushu, Japan
| | - Harushi Niu
- Department of Clinical Engineering, Kokura Memorial Hospital, Kitakyushu, Japan
| | - Kenji Ando
- Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan
| | - Kenichi Hiroshima
- Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Japan
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Qian PC, Nguyen DM, Barry MA, Tran V, Lu J, Thiagalingam A, Thomas SP, McEwan A. Optimizing Impedance Change Measurement During Radiofrequency Ablation Enables More Accurate Characterization of Lesion Formation. JACC Clin Electrophysiol 2020; 7:471-481. [PMID: 33888268 DOI: 10.1016/j.jacep.2020.09.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 09/08/2020] [Accepted: 09/09/2020] [Indexed: 11/26/2022]
Abstract
OBJECTIVES This study sought to determine whether a novel impedance thermal imaging system (ITIS) provides an impedance measurement that is better correlated with lesion dimensions than circuit impedance during radiofrequency (RF) ablation. BACKGROUND A 5- to 10-Ω impedance drop is clinically used to corroborate an effective RF ablation lesion. However, the contribution of local tissue heating to circuit impedance change is small and dependent on the local environment of the catheter and placement of the grounding patch. METHODS ITIS uses ablation catheter and skin electrodes to perform 4-terminal impedance measurements with separate voltage sensing and current injection electrode pairs. Seven sheep underwent endocardial ventricular irrigated RF ablation at 40 W for 60 s. ITIS impedance and circuit impedance were both measured throughout ablation. When the sheep were sacrificed, ablation lesions were cut along their long axis; the depth, width, and surface area of the cut surface were measured. RESULTS A total of 68 RF ablations were performed, with a median depth of 3.5 mm (interquartile range [IQR]: 2.1 to 4.9 mm), width of 8.3 mm (IQR: 5.7 to 10.8 mm), and surface area of 23.8 mm2 (IQR: 9.3 to 43.0 mm2). ITIS impedance change had good correlation with lesion depth, width, and surface area (R = 0.76, R = 0.87, and R = 0.87, respectively); and superior to circuit impedance for lesion depth, width, and surface area (p = 0.0018, p = 0.0004, and p = 0.0001, respectively). CONCLUSIONS By optimizing the current path and using 4-terminal impedance measurement during RF ablation, the contribution of tissue temperature changes to measured impedance is better standardized to provide a more reliable measure than conventional ablation circuit impedance.
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Affiliation(s)
- Pierre C Qian
- Westmead Hospital, Sydney, Australia; Faculty of Medicine, University of Sydney, Sydney, Australia; Westmead Applied Research Centre, Sydney, Australia.
| | - Duc Minh Nguyen
- Faculty of Engineering and Information Technology, University of Sydney, Sydney, Australia; Department of Biomedical Engineering, Hanoi University of Science and Technology, Hanoi, Vietnam
| | - Michael Anthony Barry
- Westmead Hospital, Sydney, Australia; Westmead Applied Research Centre, Sydney, Australia; Faculty of Engineering and Information Technology, University of Sydney, Sydney, Australia
| | - Vu Tran
- Westmead Hospital, Sydney, Australia; Westmead Applied Research Centre, Sydney, Australia
| | - Juntang Lu
- Westmead Hospital, Sydney, Australia; Westmead Applied Research Centre, Sydney, Australia
| | - Aravinda Thiagalingam
- Westmead Hospital, Sydney, Australia; Faculty of Medicine, University of Sydney, Sydney, Australia; Westmead Applied Research Centre, Sydney, Australia
| | - Stuart P Thomas
- Westmead Hospital, Sydney, Australia; Faculty of Medicine, University of Sydney, Sydney, Australia; Westmead Applied Research Centre, Sydney, Australia
| | - Alistair McEwan
- Faculty of Engineering and Information Technology, University of Sydney, Sydney, Australia
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He H, Datla S, Weight N, Raza S, Lachlan T, Aldhoon B, Panikker S, Dhanjal T, Yusuf S, Foster W, Hayat S, Osman F. Safety and cost-effectiveness of same-day complex left atrial ablation. Int J Cardiol 2020; 322:170-174. [PMID: 33002522 PMCID: PMC7521347 DOI: 10.1016/j.ijcard.2020.09.066] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/18/2020] [Accepted: 09/23/2020] [Indexed: 11/28/2022]
Abstract
Background Catheter ablation for complex left-atrial arrhythmia is increasing worldwide with many centres admitting patients overnight. Same-day procedures using conscious sedation carry significant benefits to patients/healthcare providers but data are limited. We evaluated the safety and cost-effectiveness of same-day complex left-atrial arrhythmia ablation. Method Multi-centre retrospective cohort study of all consecutive complex elective left-atrial ablation procedures performed between January 2011 and December 2019. Data were collected on planned same-day discharge versus overnight stay, baseline parameters, procedure details/success, ablation technology, post-operative complications, unplanned overnight admissions/outcomes at 4-months and mortality up to April 2020. A cost analysis of potential savings was also performed. Results A total of 967 consecutive patients underwent complex left-ablation using radiofrequency (point-by-point ablation aided by 3D-mapping or PVAC catheter ablation with fluoroscopic screening) or cryoballoon-ablation (mean age: 60.9 ± 11.6 years, range 23-83 yrs., 572 [59%] females). The majority of patients had isolation of pulmonary veins alone (n = 846, 87%) and most using conscious-sedation alone (n = 921, 95%). Of the total cohort, 414 (43%) had planned same-day procedure with 35 (8%) admitted overnight due to major (n = 5) or minor (n = 30) complications. Overall acute procedural success-rate was 96% (n = 932). Complications in planned overnight-stay/same-day cohorts were low. At 4-month follow-up there were 62 (6.4%) readmissions (femoral haematomas, palpitation, other reasons); there were 3 deaths at mean follow-up of 42.0 ± 27.6 months, none related to the procedure. Overnight stay costs £350; the same-day ablation policy over this period would have saved £310,450. Conclusions Same-day complex left-atrial catheter ablation using conscious sedation is safe and cost-effective with significant benefits for patients and healthcare providers. This is especially important in the current financial climate and Covid-19 pandemic. We have previously reported same-day standard catheter ablation is safe, feasible and cost-effective. Data on same-day complex left-atrial ablation are limited. Our multi-centre cohort study of 967 consecutive elective complex left-atrial ablation procedures between January 2011 and December 2019 revealed same-day ablations using conscious sedation were safe and associated with very few complications and could have significant benefits to patients and cost-savings for healthcare providers worldwide. Same-day complex left-atrial ablation procedures can be performed safely without the need for overnight-stay. This has major implications for both patients and healthcare providers, especially given the current financial challenges and Covid-19 pandemic.
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Affiliation(s)
- Hejie He
- Department of Cardiology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK; Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7HL, UK
| | - Sushma Datla
- Department of Cardiology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK
| | - Nicholas Weight
- Department of Cardiology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK
| | - Sidra Raza
- Department of Cardiology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK
| | - Thomas Lachlan
- Department of Cardiology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK; Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7HL, UK
| | - Bashar Aldhoon
- Department of Cardiology, Worcester Royal Hospital, Charles Hastings Way, Worcester WR5 1DD, UK
| | - Sandeep Panikker
- Department of Cardiology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK
| | - Tarv Dhanjal
- Department of Cardiology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK; Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7HL, UK
| | - Shamil Yusuf
- Department of Cardiology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK
| | - William Foster
- Department of Cardiology, Worcester Royal Hospital, Charles Hastings Way, Worcester WR5 1DD, UK
| | - Sajad Hayat
- Department of Cardiology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK; Department of Adult Cardiology Heart Hospital, Hamad Medical Corporation, Doha, Qatar
| | - Faizel Osman
- Department of Cardiology, University Hospitals Coventry and Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK; Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry CV4 7HL, UK.
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Alken FA, Chen S, Masjedi M, Pürerfellner H, Maury P, Martin CA, Sacher F, Jais P, Meyer C. Basket catheter-guided ultra-high-density mapping of cardiac arrhythmias: a systematic review and meta-analysis. Future Cardiol 2020; 16:735-751. [PMID: 32608246 DOI: 10.2217/fca-2020-0032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Aim: Ultra-high-density mapping (HDM) is increasingly used for guidance of catheter ablation in cardiac arrhythmias. While initial results are promising, a systematic evaluation of long-term outcome has not been performed so far. Methods: A systematic review and meta-analysis was conducted on studies investigating long-term outcome after Rhythmia HDM-guided atrial fibrillation (AF) or atrial tachycardia catheter ablation. Results: Beyond multiple studies providing novel insights into arrhythmia mechanisms, follow-up data from 17 studies analyzing Rhythmia HDM-guided ablation (1768 patients, 49% with previous ablation) were investigated. Cumulative acute success was 100/90.2%, while 12 months long-term pooled success displayed at 71.6/71.2% (AF/atrial tachycardia). Prospective data are limited, showing similar outcome between HDM-guided and conventional AF ablation. Conclusion: Acute results of HDM-guided catheter ablation are promising, while long-term success is challenged by complex arrhythmogenic substrates. Prospective randomized trials investigating different HDM-guided ablation strategies are warranted and underway.
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Affiliation(s)
- Fares-Alexander Alken
- Department of Cardiology, cNEP, Cardiac Neuro- & Electrophysiology Research Group, University Heart & Vascular Center Hamburg, University Hospital Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - Shaojie Chen
- Cardioangiologisches Centrum Bethanien (CCB) Frankfurt am Main, Frankfurt Academy For Arrhythmias (FAFA), Medizinische Klinik III, Agaplesion Markus Krankenhaus, Wilhelm-Epstein Straße 4, Frankfurt am Main 60431, Germany
| | - Mustafa Masjedi
- Department of Cardiology, cNEP, Cardiac Neuro- & Electrophysiology Research Group, University Heart & Vascular Center Hamburg, University Hospital Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Helmut Pürerfellner
- Department of Electrophysiology, Academic Teaching Hospital, Ordensklinikum Linz Elisabethinen, Linz, Austria
| | - Philippe Maury
- Department of Cardiology, University Hospital Rangueil, 31059 Toulouse Cedex 09, France
| | - Claire A Martin
- Royal Papworth Hospital National Health Service Foundation Trust, Cambridge, UK
| | - Frederic Sacher
- Department of Cardiac Electrophysiology, LIRYC institute, INSERM 1045, Bordeaux University Hospital, Bordeaux, France
| | - Pierre Jais
- Department of Cardiac Electrophysiology, LIRYC institute, INSERM 1045, Bordeaux University Hospital, Bordeaux, France
| | - Christian Meyer
- Department of Cardiology, cNEP, Cardiac Neuro- & Electrophysiology Research Group, University Heart & Vascular Center Hamburg, University Hospital Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany.,Department of Cardiology, Evangelical Hospital Düsseldorf, Kirchfeldstrasse 40, 40217 Düsseldorf, Germany.,Heinrich-Heine-University Hospital Düsseldorf, 40225 Düsseldorf, Germany
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41
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John M, Rook A, Post A, Mersman A, Allen W, Schramm C, Razavi M. Bipolar ablation's unique paradigm: Duration and power as respectively distinct primary determinants of transmurality and steam pop formation. Heart Rhythm O2 2020; 1:290-296. [PMID: 34113883 PMCID: PMC8183883 DOI: 10.1016/j.hroo.2020.06.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 06/16/2020] [Indexed: 01/24/2023] Open
Abstract
Background Bipolar radiofrequency (RF) ablation strategies are increasingly used, mainly to target deep myocardial reentrant circuits responsible for ventricular tachycardia that cannot be extinguished with traditional unipolar RF ablation. Because this strategy is novel, factors that affect lesion geometry and steam pop formation require further investigation. Objective To assess the effect of contact force, power, and time on the resulting lesion geometry and the risk of steam pop formation during bipolar RF ablation of thick myocardial tissue. Methods A custom ex vivo bipolar ablation model was used to assess lesion formation. A combination of parallel and perpendicular configurations of ablation catheters was used to create lesions by varying force (20g, 30g, or 40g), power (30 or 40 W), and time (20, 30, 45, or 60 seconds). Lesion dimensions and the incidence of steam pops were recorded and then analyzed with binary logistic regression and multiple linear regression. Results In bipolar ablation, lesion transmurality was most affected by the amount of time RF energy was applied. Durations longer than 20 seconds resulted in lesions deeper than half the tissue thickness. Steam pop formation was more frequent in thinner tissue, at longer ablation times, and at higher powers. Conclusion The parameters assessed in this ex vivo model could be used as guidelines for future in vivo work and clinical evaluation of interventricular septal bipolar ablation.
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Affiliation(s)
- Mathews John
- Department of Electrophysiology Clinical Research and Innovations, Texas Heart Institute, Houston, Texas
| | - Ashley Rook
- Department of Electrophysiology Clinical Research and Innovations, Texas Heart Institute, Houston, Texas
| | - Allison Post
- Department of Electrophysiology Clinical Research and Innovations, Texas Heart Institute, Houston, Texas
| | | | | | | | - Mehdi Razavi
- Department of Electrophysiology Clinical Research and Innovations, Texas Heart Institute, Houston, Texas.,Division of Cardiology, Department of Medicine, Baylor College of Medicine, Houston, Texas
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Bradley CJ, Haines DE. Pulsed field ablation for pulmonary vein isolation in the treatment of atrial fibrillation. J Cardiovasc Electrophysiol 2020; 31:2136-2147. [DOI: 10.1111/jce.14414] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 02/02/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Christopher J. Bradley
- Department of Cardiovascular Medicine, Beaumont HospitalOakland University William Beaumont School of Medicine Royal Oak Michigan
| | - David E. Haines
- Department of Cardiovascular Medicine, Beaumont HospitalOakland University William Beaumont School of Medicine Royal Oak Michigan
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Liu SZ, Shi XM, Guo HY, Wang YT, Shan ZL. Amplitude reduction of autonomic nerve function is correlated with ablation lesion quality in patients with paroxysmal atrial fibrillation. J Electrocardiol 2020; 59:158-163. [PMID: 32146202 DOI: 10.1016/j.jelectrocard.2020.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 10/28/2019] [Accepted: 02/25/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Circumferential pulmonary vein isolation (CPVI) is a common procedure that is performed on patients with atrial fibrillation (AF). However, AF may recur in some patients after treatment. This study assesses the association between autonomic modulation and late recurrence after CPVI and between autonomic modulation and ablation lesion quality. METHODS We prospectively enrolled 72 patients with paroxysmal AF who underwent CPVI from January 2017 to January 2018. Pre- and post-ablation 24 h electrocardiograms were performed to document heart rate variability (HRV), which represents cardiac autonomic function. The intraablation force-time integral (FTI) was used to indicate the extent of ablation injury. Patients were followed up for 12 months after the procedure and cases of AF recurrence were recorded. RESULTS Changes in HRV decreased after the procedure, which was correlated with FTI (ΔSDNN: r = -0.26, P = 0.03; ΔrMMSD: r = -0.28, P = 0.02; ΔlnHF: r = -0.22, P = 0.04; ΔLnLF: r = -0.29, P = 0.01). Patients without AF recurrence had more pronounced ΔLF (-21.84 ± 33.21% vs. -8.68 ± 34.59%, P = 0.01) and ΔHF (-17.26 ± 16.61% vs. -1.28 ± 9.81%, P = 0.01) than patients with recurrence. Multivariate regression analysis showed that both ΔLF (HR: 1.07, P = 0.04) and ΔHF (HR: 1.11, P = 0.01) were associated with AF recurrence. After adjusting for FTI, ΔLF was no longer associated with AF recurrence (HR: 1.05, P = 0.10). ΔHF remained associated with AF recurrence (HR: 1.08, P = 0.03), but the correlation coefficient was decreased (HR: 1.08, P = 0.03). CONCLUSION Decreased autonomic nerve function is a valid predictor of AF recurrence and is indicated by the extent of ablation injury, which is independently associated with AF recurrence after CPVI.
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Affiliation(s)
- Sai-Zhe Liu
- Department of Cardiology, The General Hospital of the Chinese People's Liberation Army, The Chinese People's Liberation Army Medical College, Beijing 100853, China
| | - Xiang-Min Shi
- Department of Cardiology, The General Hospital of the Chinese People's Liberation Army, The Chinese People's Liberation Army Medical College, Beijing 100853, China
| | - Hong-Yang Guo
- Department of Cardiology, The General Hospital of the Chinese People's Liberation Army, The Chinese People's Liberation Army Medical College, Beijing 100853, China
| | - Yu-Tang Wang
- Department of Cardiology, The General Hospital of the Chinese People's Liberation Army, The Chinese People's Liberation Army Medical College, Beijing 100853, China
| | - Zhao-Liang Shan
- Department of Cardiology, The General Hospital of the Chinese People's Liberation Army, The Chinese People's Liberation Army Medical College, Beijing 100853, China.
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44
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Parwani AS, Hohendanner F, Bode D, Kuhlmann S, Blaschke F, Lacour P, Heinzel FR, Pieske B, Boldt LH. The force stability of tissue contact and lesion size index during radiofrequency ablation: An ex-vivo study. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2020; 43:327-331. [PMID: 32091133 DOI: 10.1111/pace.13891] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/08/2020] [Accepted: 02/09/2020] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Radiofrequency (RF) ablation is a commonly used tool in the invasive electrophysiology laboratory to treat a variety of rhythm disorders. Reliable creation of transmural ablation lesions is crucial for long-term success. Lesion size index (LSI) is a multiparametric index that incorporates time, power, contact force (CF), and impedance data recorded during RF ablation in a weighted formula and has been shown to predict the extent of myocardial tissue lesions. Whether the force stability of contact influences lesion size in LSI-guided ablations is unknown. OBJECTIVES The aim of this study was to analyze the influence of the force stability of contact on lesion size during LSI-guided ablations in an ex-vivo model. METHODS AND RESULTS A total of 267 RF lesions (n = 6 hearts) were created on porcine myocardial slabs by using an open-tip irrigated ablation catheter with the following settings: 35 W with either intermittent (varied between 0 and up to 20 g), variable (10 to 20 g), or constant tissue contact (15 g) in a perpendicular or parallel fashion (applied manually) up to a target LSI of either 5 or 6. Subsequently, lesion width and depth were determined. Lesion width was mainly influenced by catheter tip orientation and LSI, whereas lesion depth was mainly influenced by LSI alone. The force stability of catheter contact had no relevant impact on lesion width or depth. CONCLUSION The force stability of catheter contact has only little effect on lesion depth or width in LSI-guided catheter ablation while the catheter orientation primarily affects lesion width.
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Affiliation(s)
- Abdul S Parwani
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany.,Department of Internal Medicine and Cardiology, German Heart Institute, Berlin, Germany
| | - Felix Hohendanner
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany.,Department of Internal Medicine and Cardiology, German Heart Institute, Berlin, Germany
| | - David Bode
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany.,Department of Internal Medicine and Cardiology, German Heart Institute, Berlin, Germany
| | - Stefan Kuhlmann
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany.,Department of Internal Medicine and Cardiology, German Heart Institute, Berlin, Germany
| | - Florian Blaschke
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany.,Department of Internal Medicine and Cardiology, German Heart Institute, Berlin, Germany
| | - Philipp Lacour
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany.,Department of Internal Medicine and Cardiology, German Heart Institute, Berlin, Germany
| | - Frank R Heinzel
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany.,Department of Internal Medicine and Cardiology, German Heart Institute, Berlin, Germany
| | - Burkert Pieske
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany.,Department of Internal Medicine and Cardiology, German Heart Institute, Berlin, Germany
| | - Leif-Hendrik Boldt
- Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Virchow Klinikum, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany.,Department of Internal Medicine and Cardiology, German Heart Institute, Berlin, Germany
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45
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Okishige K, Kawaguchi N, Iwai S, Yamauchi Y, Keida T, Sasano T, Hirao K, Valderrabano M. Comparative Study of Cryoballoon versus Radiofrequency for Pulmonary Vein Isolation when Combined with vein of Marshall Ethanol Infusion for Paroxysmal Atrial Fibrillation. J Atr Fibrillation 2020; 12:2253. [PMID: 32435354 DOI: 10.4022/jafib.2253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 12/12/2019] [Accepted: 01/11/2020] [Indexed: 01/08/2023]
Abstract
Introduction Ethanol infusion (EI) in the vein of Marshall (VOM) has multifactorial effects that could be synergistic to pulmonary vein isolation (PVI) in ablation of atrial fibrillation (AF). The efficacy of radiofrequency (RF) versus cryoablation when combined with a VOM-EI has never been investigated. The aim of this study is to evaluate outcome differences of AF ablation using RF versus cryoablation when combined with a VOM-EI. Materials and Methods Consecutive patients (n=132) underwent catheter ablation of paroxysmal AF with either RF or cryoballoon (CB) for PVI combined with VOM-EI. Bi-directional conduction block at the mitral isthmus was attempted. The end-point was the freedom from any atrial arrhythmias documented after a blanking period of 90 days after the procedure. Results Kaplan-Meier estimates of the arrhythmia-free survival after 1 year were 63.8 (RF + VOM), and 82.7 % (CB + VOM), respectively. Comparison between CB + VOM versus RF + VOM reached a significance (p=0.0292). The periprocedural complication rate was comparable in both groups (5.0 % RF, 5.8 % CB; p=0.14) with a significant difference in the incidence of phrenic nerve palsy (0 % RF, 2.0 % CB; p<0.05). Conclusions PVI with a CB had an increased freedom from AF recurrence compared to RF combined with VOM-EI. The present results suggest a potential additive effect of a VOM-EI to CB application.
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Affiliation(s)
- Kaoru Okishige
- Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama, Japan.,Division of Cardiology, Edogawa Hospital.,Arrhythmia Center, Tokyo Medical and Dental University.,Division of Cardiac Electrophysiology, Methodist DeBakey Heart and Vascular Center and Houston Methodist Research Institute, Houston, TX
| | - Naohiko Kawaguchi
- Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama, Japan.,Division of Cardiology, Edogawa Hospital.,Arrhythmia Center, Tokyo Medical and Dental University.,Division of Cardiac Electrophysiology, Methodist DeBakey Heart and Vascular Center and Houston Methodist Research Institute, Houston, TX
| | - Shinsuke Iwai
- Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama, Japan.,Division of Cardiology, Edogawa Hospital.,Arrhythmia Center, Tokyo Medical and Dental University.,Division of Cardiac Electrophysiology, Methodist DeBakey Heart and Vascular Center and Houston Methodist Research Institute, Houston, TX
| | | | | | - Tetsuo Sasano
- Arrhythmia Center, Tokyo Medical and Dental University
| | - Kenzo Hirao
- Division of Cardiac Electrophysiology, Methodist DeBakey Heart and Vascular Center and Houston Methodist Research Institute, Houston, TX
| | - Miguel Valderrabano
- Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama, Japan.,Division of Cardiology, Edogawa Hospital.,Arrhythmia Center, Tokyo Medical and Dental University.,Division of Cardiac Electrophysiology, Methodist DeBakey Heart and Vascular Center and Houston Methodist Research Institute, Houston, TX
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Jankelson L, Dai M, Bernstein S, Park D, Holmes D, Aizer A, Chinitz L, Barbhaiya C. Quantitative analysis of ablation technique predicts arrhythmia recurrence following atrial fibrillation ablation. Am Heart J 2020; 220:176-183. [PMID: 31835167 DOI: 10.1016/j.ahj.2019.11.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 11/22/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Optimal ablation technique, including catheter-tissue contact during atrial fibrillation (AF) radiofrequency (RF) ablation, is associated with improved procedural outcomes. We used a custom developed software to analyze high-frequency catheter position data to study the interaction between catheter excursion during lesion placement, lesion-set sequentiality, and arrhythmia recurrence. METHODS A total of 100 consecutive patients undergoing first-time RF ablation for paroxysmal AF were analyzed. Spatial positioning of the ablation catheter sampled at 60 Hz during RF application was extracted from the CARTO3 system (Biosense Webster Inc, USA) and analyzed using custom-developed MATLAB software to determine precise catheter spatial 3D excursion during RF ablation. The primary end point was freedom from atrial arrhythmia lasting longer than 30 seconds after a single ablation procedure. RESULTS At 1 year, 86% of patients were free from recurrent arrhythmia. There was no significant difference in clinical, echocardiographic, or ablation characteristics between patients with and without recurrent arrhythmia. Analyzing 15,356,998 position data points revealed that lesion-set sequentiality and mean lesion catheter excursion were predictors of arrhythmia recurrence. Analyzing arrhythmia recurrence by mean single-lesion catheter excursion (excursion >2.81 mm) and by sequentiality (using 46% of lesions with interlesion distance >6 mm as cutoff) revealed significantly increased arrhythmia recurrence in the higher excursion group (23% vs 6%, P = .03) and in the less sequential group (24% vs 4%, P = .02). CONCLUSIONS Ablation lesion sequentiality measured by catheter interlesion distance and catheter stability measured by catheter excursion during lesion placement are potentially modifiable factors affecting arrhythmia recurrence after RF ablation for AF.
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47
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So-Ryoung L, Hyoung-Seob P, Eue-Keun C, Soonil K, Youngjin C, Il-Young O, Seil O, Seongwook H. Contact Force-Guided Ablation Reduced Poor Contact Segments and Improved Acute Reconnection in Patients with Atrial Fibrillation. J Atr Fibrillation 2020; 12:2185. [PMID: 32435352 DOI: 10.4022/jafib.2185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/02/2019] [Accepted: 12/26/2019] [Indexed: 12/13/2022]
Abstract
Background There is a paucity of information regarding whether contact force (CF)-guided ablation improves the outcomes of pulmonary vein isolation (PVI) in patients with atrial fibrillation (AF) by achieving more optimal contact. We sought to assess whether real time CF-guided ablation has an impact on ablation parameters and acute pulmonary vein reconnection (PVR). Methods Left or right PVs were randomized to either CF-guided or blinded groups, and the order of CF blindness: CF-guided left PV/CF-blinded right PV, CF-blinded left PV/CF-guided right PV, CF-guided right PV/CF-blinded left PV, and CF-blinded right PV/CF-guided left PV groups. We compared CF parameters and acute PVR between segments ablated by CF-guided and CF-blinded strategies. Results Sixty patients with drug refractory symptomatic AF were included (paroxysmal AF 73%). CF-guided segments did not show significant differences in CF parameters compared to CF-blinded segments. However, CF-guided segments showed fewer segments with mean CF value <5 g than CF-blinded segments (4.3% vs. 12.4%, p<0.001). Forty-two patients showed acute PVR in 92 segments (8.5%). CF-guided PV segments showed lower acute PVR rate than CF-blinded segments (5.9% vs. 11.1%, p=0.011). Conclusions CF-guided ablation could reduce acute PVR after PVI by decreasing the number of segments with poor contact rather than increasing the mean CF during ablation. Better contact guided by CF information might help in improving the results of PVI. Further investigation will be needed to identify the association between the difference in acute reconnection and the long-term outcomes.
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Affiliation(s)
- Lee So-Ryoung
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea.,the first two authors equally contributed
| | - Park Hyoung-Seob
- Division of Cardiology, Department of Internal Medicine, Keimyung University, Dongsan Medical Center, Daegu, Republic of Korea.,the first two authors equally contributed
| | - Choi Eue-Keun
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Kwon Soonil
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Cho Youngjin
- Department of Internal Medicine, Cardiovascular Center, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Oh Il-Young
- Department of Internal Medicine, Cardiovascular Center, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Oh Seil
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Han Seongwook
- Division of Cardiology, Department of Internal Medicine, Keimyung University, Dongsan Medical Center, Daegu, Republic of Korea
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48
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Beiert T, Schrickel JW. [Catheter ablation of cardiac arrhythmias : Forms of energy and biophysical principles]. Herzschrittmacherther Elektrophysiol 2019; 30:330-335. [PMID: 31696309 DOI: 10.1007/s00399-019-00650-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/11/2019] [Indexed: 12/16/2022]
Abstract
Catheter ablation of cardiac arrhythmias has evolved over the years and has become a cornerstone in the modern treatment of various supraventricular and ventricular arrhythmias. The goal of ablation is to permanently damage myocardium that is critically involved in the individual arrhythmia mechanism. Different catheters and forms of energy are available. Radiofrequency (RF) ablation is most common. Application of an alternating current at the catheter tip induces heating of tissue and, thus, leads to ablation of a targeted arrhythmogenic substrate. High temperatures (>70 °C at the catheter tip and >95 °C within the tissue) bear the risk of coagulum formation and steam pops and should be avoided, which limits power application. The evolution of irrigated RF ablation catheters enables the transfer of more power to the tissue and thereby increases the dimensions of the lesions. Cryoablation represents a valuable alternative. Cooling of tissue to -80 °C causes the intra- and extracellular formation of ice crystals, finally resulting in a dense circumscribed scar. The cryomapping procedure grants improved surveillance of the safety of ablation. Cryoenergy is very popular for pulmonary vein isolation (PVI) using the cryoballoon. In addition to the laser balloon that is established for PVI, ultrasound, microwaves, and stereotactic irradiation complete the arsenal.
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Affiliation(s)
- Thomas Beiert
- Medizinische Klinik und Poliklinik II, Sektion Elektrophysiologie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland.
| | - Jan W Schrickel
- Medizinische Klinik und Poliklinik II, Sektion Elektrophysiologie, Universitätsklinikum Bonn, Venusberg-Campus 1, 53127, Bonn, Deutschland
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49
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Ariyarathna N, Kumar S, Thomas SP, Stevenson WG, Michaud GF. Role of Contact Force Sensing in Catheter Ablation of Cardiac Arrhythmias: Evolution or History Repeating Itself? JACC Clin Electrophysiol 2019; 4:707-723. [PMID: 29929663 DOI: 10.1016/j.jacep.2018.03.014] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 03/12/2018] [Accepted: 03/22/2018] [Indexed: 12/28/2022]
Abstract
Adequate catheter-tissue contact facilitates efficient heat energy transfer to target tissue. Tissue contact is thus critical to achieving lesion transmurality and success of radiofrequency (RF) ablation procedures, a fact recognized more than 2 decades ago. The availability of real-time contact force (CF)-sensing catheters has reinvigorated the field of ablation biophysics and optimized lesion formation. The ability to measure and display CF came with the promise of dramatic improvement in safety and efficacy; however, CF quality was noted to have just as important an influence on lesion formation as absolute CF quantity. Multiple other factors have emerged as key elements influencing effective lesion formation, including catheter stability, lesion contiguity and continuity, lesion density, contact homogeneity across a line of ablation, spatiotemporal dynamics of contact governed by cardiac and respiratory motion, contact directionality, and anatomic wall thickness, in addition to traditional ablation indices of power and RF duration. There is greater appreciation of surrogate markers as a guide to lesion formation, such as impedance fall, loss of pace capture, and change in unipolar electrogram morphology. In contrast, other surrogates such as tactile feedback, catheter motion, and electrogram amplitude are notably poor predictors of actual contact and lesion formation. This review aims to contextualize the role of CF sensing in lesion formation with respect of the fundamental principles of biophysics of RF ablation and summarize the state-of-the-art evidence behind the role of CF in optimizing lesion formation.
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Affiliation(s)
- Nilshan Ariyarathna
- Cardiology Department, The Canberra Hospital, Canberra, Australian Capital Territory, Australia
| | - Saurabh Kumar
- Department of Cardiology, Westmead Hospital, Westmead Applied Research Centre, University of Sydney, New South Wales, Australia
| | - Stuart P Thomas
- Department of Cardiology, Westmead Hospital, Westmead Applied Research Centre, University of Sydney, New South Wales, Australia
| | - William G Stevenson
- Arrhythmia and Electrophysiology Program, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Gregory F Michaud
- Arrhythmia and Electrophysiology Program, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.
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50
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Lee A, Gerstenfeld EP. High‐power radiofrequency ablation for atrial fibrillation: Establishing a standardized protocol. J Cardiovasc Electrophysiol 2019; 30:2732-2733. [DOI: 10.1111/jce.14217] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 09/30/2019] [Indexed: 11/26/2022]
Affiliation(s)
- Adam Lee
- Section of Cardiac Electrophysiology, Division of Cardiology, Department of MedicineUniversity of California San Francisco San Francisco California
| | - Edward P. Gerstenfeld
- Section of Cardiac Electrophysiology, Division of Cardiology, Department of MedicineUniversity of California San Francisco San Francisco California
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