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Tahir MF, Maryyum A, Mubbashir Z, Khan AM, Imam SI, Mustafa F, Hasan SZ, Shoaib U, Iqbal A, Saeed O, Purushotham M, Khan M, Tariq S, Larik MO, Anjum MU, Hasanain M, Ayyalu T, Changez MIK, Iqbal J. Comparison of Single-Coil Versus Dual-Coil Implantable Cardioverter Defibrillator Devices: A Systematic Review and Meta-Analysis of Efficacy and Extraction-Related Outcomes. Clin Cardiol 2025; 48:e70083. [PMID: 39910823 PMCID: PMC11799043 DOI: 10.1002/clc.70083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2024] [Revised: 12/18/2024] [Accepted: 01/10/2025] [Indexed: 02/07/2025] Open
Abstract
BACKGROUND Implantable cardioverter defibrillators (ICD) are battery-operated devices used to manage irregular heart rhythms and deliver therapeutic shocks to the heart. This updated systematic review and meta-analysis compares the efficacy and extraction-related outcomes of single-coil versus dual-coil ICDs in view of conflicting data. METHODS Several databases, including PubMed, Cochrane Library, and Google Scholar, were comprehensively explored dating from inception to April 1, 2024. Data were compared using odds ratio (OR), hazard ratio (HR), and mean differences (MD). A value of p < 0.05 indicated statistical significance. RESULTS Ultimately, 28 studies were included in this quantitative synthesis. Defibrillation threshold (DFT) indicated statistical superiority in the dual-coil cohort (MD: 0.58; 95% confidence interval [CI]: 0.07-1.09; p = 0.03). In addition, all-cause mortality was significantly elevated in the dual-coil cohort (HR: 0.91; 95% CI: 0.87-0.97; p = 0.001). Furthermore, implant time was significantly lower in the single-coil group (MD: -7.44; 95% CI: -13.44 to -1.43; p = 0.02). Other outcomes, including first shock efficacy, cardiac mortality, post-extraction major complications, post-extraction procedural success, and post-extraction mortality, did not demonstrate any significant statistical differences. CONCLUSION In conclusion, despite the desirable safety profile of single-coil ICDs, the use of dual-coil ICDs continues to hold merit due to their superior efficacy and advanced sensing capabilities, especially in complex cases. In addition, the perceived risk of a greater adverse profile in dual-coil lead extraction can be refuted by preliminary aggregate results generated within this meta-analysis. However, further robust studies are warranted before arriving at a valid conclusion.
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Affiliation(s)
- Muhammad Fawad Tahir
- Department of MedicineH. B. S. Medical and Dental CollegeIslamabadPakistan
- Department of CardiologyRawalpindi Institute of CardiologyRawalpindiPakistan
| | - Adeena Maryyum
- Department of MedicineAyub Medical CollegeAbbottabadPakistan
| | | | - Abdul Moiz Khan
- Department of MedicineAyub Medical CollegeAbbottabadPakistan
| | - Syed Irtiza Imam
- Department of MedicineJinnah Sindh Medical UniversityKarachiPakistan
| | - Fatima Mustafa
- Department of MedicineZiauddin UniversityKarachiPakistan
| | | | - Umer Shoaib
- Department of MedicineDow Medical CollegeKarachiPakistan
| | - Areej Iqbal
- Department of MedicineZiauddin UniversityKarachiPakistan
| | - Osama Saeed
- Department of MedicineFrontier Medical CollegeAbbottabadPakistan
| | | | - Maimoona Khan
- Department of MedicineDow Medical CollegeKarachiPakistan
| | - Shahtaj Tariq
- Department of MedicineDow Medical CollegeKarachiPakistan
| | | | | | | | - Tanesh Ayyalu
- Department of CardiologyMedStar Georgetown University HospitalWashingtonDCUSA
| | | | - Javed Iqbal
- Nursing DepartmentHamad Medical CorporationDohaQatar
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Qian S, Monaci S, Mendonca-Costa C, Campos F, Gemmell P, Zaidi HA, Rajani R, Whitaker J, Rinaldi CA, Bishop MJ. Additional coils mitigate elevated defibrillation threshold in right-sided implantable cardioverter defibrillator generator placement: a simulation study. Europace 2023; 25:euad146. [PMID: 37314196 PMCID: PMC10265967 DOI: 10.1093/europace/euad146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 05/13/2023] [Indexed: 06/15/2023] Open
Abstract
AIMS The standard implantable cardioverter defibrillator (ICD) generator (can) is placed in the left pectoral area; however, in certain circumstances, right-sided cans may be required which may increase defibrillation threshold (DFT) due to suboptimal shock vectors. We aim to quantitatively assess whether the potential increase in DFT of right-sided can configurations may be mitigated by alternate positioning of the right ventricular (RV) shocking coil or adding coils in the superior vena cava (SVC) and coronary sinus (CS). METHODS AND RESULTS A cohort of CT-derived torso models was used to assess DFT of ICD configurations with right-sided cans and alternate positioning of RV shock coils. Efficacy changes with additional coils in the SVC and CS were evaluated. A right-sided can with an apical RV shock coil significantly increased DFT compared to a left-sided can [19.5 (16.4, 27.1) J vs. 13.3 (11.7, 19.9) J, P < 0.001]. Septal positioning of the RV coil led to a further DFT increase when using a right-sided can [26.7 (18.1, 36.1) J vs. 19.5 (16.4, 27.1) J, P < 0.001], but not a left-sided can [12.1 (8.1, 17.6) J vs. 13.3 (11.7, 19.9) J, P = 0.099). Defibrillation threshold of a right-sided can with apical or septal coil was reduced the most by adding both SVC and CS coils [19.5 (16.4, 27.1) J vs. 6.6 (3.9, 9.9) J, P < 0.001, and 26.7 (18.1, 36.1) J vs. 12.1 (5.7, 13.5) J, P < 0.001]. CONCLUSION Right-sided, compared to left-sided, can positioning results in a 50% increase in DFT. For right-sided cans, apical shock coil positioning produces a lower DFT than septal positions. Elevated right-sided can DFTs may be mitigated by utilizing additional coils in SVC and CS.
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Affiliation(s)
- Shuang Qian
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Sofia Monaci
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Caroline Mendonca-Costa
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Fernando Campos
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Philip Gemmell
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Hassan A Zaidi
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Ronak Rajani
- Department of Cardiology, Guy’s and St Thomas’ Hospital, Westminster Bridge Rd, London SE1 7EH, UK
| | - John Whitaker
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
- Department of Cardiology, Guy’s and St Thomas’ Hospital, Westminster Bridge Rd, London SE1 7EH, UK
| | - Christopher A Rinaldi
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
- Department of Cardiology, Guy’s and St Thomas’ Hospital, Westminster Bridge Rd, London SE1 7EH, UK
| | - Martin J Bishop
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
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Levi N, Bongiorni MG, Rav Acha M, Tovia-Brodie O, Kennergren C, Auricchio A, Maggioni AP, Rinaldi CA, Nof E, Ilan M, Blomstrom-Lundqvist C, Deharo JC, Leclercq C, Glikson M, Michowitz Y. Lead fixation mechanism impacts outcome of transvenous lead extraction: Data from the European Lead Extraction ConTRolled Registry. Europace 2021; 24:817-827. [PMID: 34652415 DOI: 10.1093/europace/euab240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/26/2021] [Indexed: 11/12/2022] Open
Abstract
AIMS The aims of this study is to characterize the transvenous lead extraction (TLE) population with active (A) compared with passive fixation (PFix) leads and to compare the safety, efficacy, and ease of extracting active fixation (AFix) compared with PFix right atrial (RA) and right ventricular (RV) leads. METHODS AND RESULTS The European Lead Extraction ConTRolled Registry (ELECTRa) was analysed. Patients were divided into three groups; those with only AFix, only PFix, and combined Fix leads. Three outcomes were defined. Difficult extraction, complete radiological, and clinical success. Multivariate model was used to analyse the independent effect of Fix mechanism on these outcomes. The study included 2815 patients, 1456 (51.7%) with only AFix leads, 982 (34.9%) with only PFix leads, and 377 (13.4%) with combined Fix leads. Patients with AFix leads were younger with shorter lead dwelling time. Infection was the leading cause for TLE among the combined Fix group with lowest rates among AFix group. No difference in complications rates was noted between patients with only AFix vs. PFix leads. Overall, there were 1689 RA (1046 AFix and 643 PFix) and 2617 RV leads (1441 AFix and 1176 PFix). Multivariate model demonstrated that PFix is independently associated with more difficult extraction for both RA and RV leads, lower radiological success in the RA but has no effect on clinical success. CONCLUSION Mechanism of Fix impact the ease of TLE of RA and RV leads and rates of complete radiological success in the RA but not clinical success. These findings should be considered during implantation and TLE procedures.
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Affiliation(s)
- Nir Levi
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Faculty of Medicine Hebrew University, 12 Shmuel Beit Street, Jerusalem 9103102, Israel
| | | | - Moshe Rav Acha
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Faculty of Medicine Hebrew University, 12 Shmuel Beit Street, Jerusalem 9103102, Israel
| | - Oholi Tovia-Brodie
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Faculty of Medicine Hebrew University, 12 Shmuel Beit Street, Jerusalem 9103102, Israel
| | - Charles Kennergren
- Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Angelo Auricchio
- Division of Cardiology, Istituto Cardiocentro Ticino, Lugano, Switzerland
| | | | | | - Eyal Nof
- Leviev Heart Institute, Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Michael Ilan
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Faculty of Medicine Hebrew University, 12 Shmuel Beit Street, Jerusalem 9103102, Israel
| | | | - Jean-Claude Deharo
- Assistance Publique - Hôpitaux de Marseille, Centre Hospitalier Universitaire La Timone, Service de Cardiologie, Marseille, France.,Aix Marseille University, C2VN Marseille, France
| | | | - Michael Glikson
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Faculty of Medicine Hebrew University, 12 Shmuel Beit Street, Jerusalem 9103102, Israel
| | - Yoav Michowitz
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Faculty of Medicine Hebrew University, 12 Shmuel Beit Street, Jerusalem 9103102, Israel
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4
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Ząbek A, Boczar K, Dębski M, Ulman M, Pfitzner R, Musiał R, Lelakowski J, Małecka B. Effectiveness and safety of transvenous extraction of single- versus dual-coil implantable cardioverter-defibrillator leads at single-center experience. Medicine (Baltimore) 2019; 98:e16548. [PMID: 31348275 PMCID: PMC6709158 DOI: 10.1097/md.0000000000016548] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The available literature lacks data concerning direct comparison of the effectiveness and safety of single- versus dual-coil implantable cardioverter-defibrillator (ICD) leads transvenous extraction. Certainly, additional shocking coil in superior vena cava adds to the amount of metal in the vascular system. Adhesions developing around the superior vena cava coil add to the difficulty of extraction of ICD lead if lead removal is required. The aim of the study was to assess the effectiveness and safety of single- and dual-coil ICD leads transvenous extraction using mechanical systems. We performed transvenous lead extraction (TLE) of 197 ICD leads in 196 patients. There were 46 (23.3%) dual-coil leads removed from 46 (23.5%) patients. Cardiovascular implantable electronic device-related infection was an indication for TLE in 25.0% of patients. The following extracting techniques were used: manual direct traction, mechanical telescopic sheaths, controlled-rotation mechanical sheaths, and femoral approach. Complete ICD lead removal and complete procedural success in both groups were similar (99.3% in single-coil vs 97.8% in dual-coil, P = .41 and 99.3% in single-coil vs 97.8% in dual-coil, P = 0.41, respectively). We did not find significant difference between major and minor complication rates in both groups (2.0% in single-coil vs 4.3% in dual-coil, and 0.7% in single-coil vs 0.0% in dual-coil, P = .58, respectively). There was 1 death associated with the TLE procedure of single-coil lead.This study shows that extraction of dual-coil leads seems to be comparably safe and effective to extraction of single-coil leads. On the other hand, it requires longer fluoroscopy time and frequent utilization of advanced tools.
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Affiliation(s)
| | | | | | | | - Roman Pfitzner
- Department of Cardiac and Vascular Surgery, The John Paul II Hospital
- Institute of Cardiology, Jagiellonian University Medical College
| | - Robert Musiał
- Department of Anesthesiology and Intensive Care, The John Paul II Hospital, Krakow, Poland
| | - Jacek Lelakowski
- Department of Electrocardiology
- Institute of Cardiology, Jagiellonian University Medical College
| | - Barbara Małecka
- Department of Electrocardiology
- Institute of Cardiology, Jagiellonian University Medical College
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5
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Neuzner J, Hohnloser SH, Kutyifa V, Glikson M, Dietze T, Mabo P, Vinolas X, Kautzner J, O'Hara G, Lawo T, Brachmann J, VanErven L, Gadler F, Appl U, Wang J, Connolly SJ, Healey JS. Effectiveness of single- vs dual-coil implantable defibrillator leads: An observational analysis from the SIMPLE study. J Cardiovasc Electrophysiol 2019; 30:1078-1085. [PMID: 30945798 DOI: 10.1111/jce.13943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/08/2019] [Accepted: 04/01/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Dual-coil leads (DC-leads) were the standard of choice since the first nonthoracotomy implantable cardioverter/defibrillator (ICD). We used contemporary data to determine if DC-leads offer any advantage over single-coil leads (SC-leads), in terms of defibrillation efficacy, safety, clinical outcome, and complication rates. METHODS AND RESULTS In the Shockless IMPLant Evaluation study, 2500 patients received a first implanted ICD and were randomized to implantation with or without defibrillation testing. Two thousand and four hundred seventy-five patients received SC-coil or DC-coil leads (SC-leads in 1025/2475 patients; 41.4%). In patients who underwent defibrillation testing (n = 1204), patients with both lead types were equally likely to achieve an adequate defibrillation safety margin (88.8% vs 91.2%; P = 0.16). There was no overall effect of lead type on the primary study endpoint of "failed appropriate shock or arrhythmic death" (adjusted HR 1.18; 95% CI, 0.86-1.62; P = 0.300), and on all-cause mortality (SC-leads: 5.34%/year; DC-leads: 5.48%/year; adjusted HR 1.16; 95% CI, 0.94-1.43; P = 0.168). However, among patients without prior heart failure (HF), and SC-leads had a significantly higher risk of failed appropriate shock or arrhythmic death (adjusted HR 7.02; 95% CI, 2.41-20.5). There were no differences in complication rates. CONCLUSION In this nonrandomized evaluation, there was no overall difference in defibrillation efficacy, safety, outcome, and complication rates between SC-leads and DC-leads. However, DC-leads were associated with a reduction in the composite of failed appropriate shock or arrhythmic death in the subgroup of non-HF patients. Considering riskier future lead extraction with DC-leads, SC-leads appears to be preferable in the majority of patients.
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Affiliation(s)
| | - Stefan H Hohnloser
- Department of Cardiology, University Hospital Frankfurt, Goethe University, Frankfurt, Germany
| | - Valentina Kutyifa
- Semmelweis University, Budapest, Hungary.,University of Rochester Medical Center, Rochester, New York
| | - Michael Glikson
- Leviev Heart Center, Sheba Medical Center, Tel Hashomer, Israel
| | | | | | | | - Josef Kautzner
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Gilles O'Hara
- Institute Universitaire de Cardiologie et de Pneumologie de, Quebec, QC, Canada
| | - Thomas Lawo
- Elisabeth Krankenhaus, Recklinghausen, Germany
| | | | | | | | - Ursula Appl
- Boston Scientific, Minneapolis, Minnesota.,Boston Scientific, Brussels, Belgium
| | - Jia Wang
- Population Health Research Institute, Hamilton, Canada
| | | | - Jeff S Healey
- Population Health Research Institute, Hamilton, Canada.,Mc Master University, Hamilton, Canada
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6
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Yu Z, Wu Y, Qin S, Wang J, Chen X, Chen R, Su Y, Ge J. Comparison of single-coil lead versus dual-coil lead of implantable cardioverter defibrillator on lead-related venous complications in a canine model. J Interv Card Electrophysiol 2018; 52:195-201. [PMID: 29572716 DOI: 10.1007/s10840-018-0312-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 01/03/2018] [Indexed: 10/17/2022]
Abstract
PURPOSE Dual- coil lead (DCL) of implantable cardioverter defibrillator (ICD) is preferred clinically in patients. However, it is related to higher risk of venous stenosis and thrombosis. The present study was done to compare the fibrosis and extraction of the leads between the single-coil lead (SCL) and DCL in animal models. METHODS This was a chronic animal study with a follow-up duration of 6 months. Twenty mongrel dogs were randomly divided into DCL group or SCL group. Venography was performed before the sacrifice to evaluate the venous stenosis in vivo. The maximum pulling-out tension of the ICD lead was measured by a tensometer. Hematoxylin-eosin stain and toluidine blue O stain were applied to show the pathological changes of the superior vena cava (SVC) to evaluate the fibrosis and the thickness of the SVC adjacent to the leads. RESULTS The DCL group showed higher incidence of venous stenosis (OR = 31.5; 95% CI, 2.35-422.3; p = 0.005). It revealed increased tension to extract the leads in the DCL group (5.96 ± 1.86 vs. 3.68 ± 1.46 N, p = 0.027). The difference of venous wall thickness of SVC was 4.3 ± 0.3 fold-changes between two groups (p = 0.007). Moreover, the degree of venous wall fibrosis in DCL group was more serious than that it in SCL group (3.61 ± 1.26 vs. 1.08 ± 1.35 mm2, p = 0.015). CONCLUSION The DCL was proved to increase thrombosis, fibrosis, and stenosis in the SVC. Likewise, the DCL was mechanically harder to be extracted than the SCL. Our study showed that lead-related complications of the DCLs were higher than those of the SCLs regardless of the equal defibrillation thresholds between them. Results of the present study would help to choose the proper lead which could be removed.
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Affiliation(s)
- Ziqing Yu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai, 200032, People's Republic of China.,Shanghai Medical College, Fudan University, Shanghai, 200032, People's Republic of China
| | - Yuan Wu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China
| | - Shengmei Qin
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai, 200032, People's Republic of China
| | - Jingfeng Wang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai, 200032, People's Republic of China
| | - Xueying Chen
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai, 200032, People's Republic of China
| | - Ruizhen Chen
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.,Department of Cardiovascular Diseases, Key Laboratory of Viral Heart Diseases, Ministry of Public Health, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China
| | - Yangang Su
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China. .,Shanghai Institute of Medical Imaging, Shanghai, 200032, People's Republic of China.
| | - Junbo Ge
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.
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7
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Almehmadi F, Manlucu J. Should Single-Coil Implantable Cardioverter Defibrillator Leads Be Used in all Patients? Card Electrophysiol Clin 2018; 10:59-66. [PMID: 29428142 DOI: 10.1016/j.ccep.2017.11.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The historical preference for dual-coil implantable cardioverter defibrillator leads stems from high defibrillation thresholds associated with old device platforms. The high safety margins generated by contemporary devices have rendered the modest difference in defibrillation efficacy between single- and dual-coil leads clinically insignificant. Cohort data demonstrating worse lead extraction outcomes and higher all-cause mortality have brought the incremental utility of an superior vena cava coil into question. This article summarizes the current literature and re-evaluates the utility of dual-coil leads in the context of modern device technology.
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Affiliation(s)
- Fahad Almehmadi
- Division of Cardiology, Department of Medicine, Western University, PO Box 5339, 339 Windermere Road, Room B6-127, London, Ontario N6A 5A5, Canada
| | - Jaimie Manlucu
- Division of Cardiology, Department of Medicine, Western University, PO Box 5339, 339 Windermere Road, Room B6-127, London, Ontario N6A 5A5, Canada.
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8
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Implantable Cardioverter Defibrillator Implantation with or Without Defibrillation Testing. Card Electrophysiol Clin 2018; 10:119-125. [PMID: 29428133 DOI: 10.1016/j.ccep.2017.11.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Defibrillation testing (DFT) during implantable cardioverter-defibrillator (ICD) implantation is still considered standard of care in some, but in increasingly fewer centers. The goal is to ensure that the device system functions as intended by testing in the controlled laboratory setting. Although safe, complications can occur and DFT is associated with an increased procedural time and cost. DFT is useful in assessing device function when programming changes or patient characteristics raise concerns regarding ICD efficacy. DFT remains standard of practice following implantation of subcutaneous ICDs and other specific circumstances. Implanting physicians should remain familiar with the process of DFT and situations where it is useful for individual patients.
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9
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Leshem E, Suleiman M, Laish-Farkash A, Haim M, Geist M, Luria D, Glikson M, Goldenberg I, Michowitz Y. Impact of quadripolar LV leads on heart failure hospitalization rates among patients implanted with CRT-D: data from the Israeli ICD Registry. J Interv Card Electrophysiol 2017; 51:5-12. [PMID: 29274032 DOI: 10.1007/s10840-017-0305-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 12/14/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Cardiac resynchronization therapy (CRT) is an effective treatment for heart failure (HF); however, a third of patients are non-responders. The development of quadripolar left ventricular (LV) lead was shown, mainly in single manufactures' registry, to improve LV remodeling and overall mortality. However, limited reports exist on the impact of quadripolar LV leads on HF hospitalization rates in real-life cohorts. We evaluated the clinical outcomes associated with quadripolar LV leads in a large nation-wide registry including all patients implanted with a cardiac resynchronization therapy with defibrillator (CRT-D). METHODS Between July 2010 and October 2016, 2913 consecutive patients were implanted with a CRT-D and all were prospectively enrolled in the Israeli ICD Registry. Quadripolar LV leads were implanted in 973 (33.4%) patients during this period, and their clinical outcomes were compared to CRT-D recipients implanted with a bipolar LV lead. Primary endpoint was HF hospitalization rate. RESULTS Quadripolar leads were implanted more in patients with non-ischemic cardiomyopathy and for primary prevention indication and less in post-infarction patients and for secondary prevention of sudden death. Longer QRS duration was observed with quadripolar leads (147 ± 23 vs 143 ± 25; p < 0.001). Outcome event rate for 100 patient years revealed no difference in HF hospitalization rates between bipolar and quadripolar LV leads. Quadripolar lead implant led to lower cardiac mortality, with no influence on overall mortality. Multivariate analysis revealed no significant differences in study endpoints between bipolar and quadripolar LV leads. CONCLUSION In a large real-life registry, implantation of quadripolar LV leads in patients with CRT-D did not influence HF hospitalization rates.
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Affiliation(s)
- Eran Leshem
- Department of Cardiology, Tel-Aviv Medical Center, Tel Aviv, Israel. .,Cardiovascular Institute, Beth Israel Deaconess Medical Center, 185 Pilgrim Rd, Boston, MA, 02215, USA.
| | | | | | - Moti Haim
- Cardiology Department, Soroka Medical Center, Beer Sheva, Israel
| | - Michael Geist
- Cardiology Department, Edith Wolfson Medical Center, Holon, Israel
| | - David Luria
- Cardiology Department, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Michael Glikson
- Leviev Heart Center, Sheba Medical Center, Tel Hashomer, Israel
| | - Ilan Goldenberg
- Leviev Heart Center, Sheba Medical Center, Tel Hashomer, Israel.,IACT-Neufeld Cardiac Research Institute, Tel Hashomer, Israel
| | - Yoav Michowitz
- Department of Cardiology, Tel-Aviv Medical Center, Tel Aviv, Israel
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