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Bazoukis G, Letsas KP, Liu T, Tse G, Alsheikh-Ali A. Association of Late Potentials With Fatal Arrhythmic Events in Patients With Brugada Syndrome-A Meta-analysis. Cardiol Rev 2024; 32:334-337. [PMID: 37811999 DOI: 10.1097/crd.0000000000000511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Risk stratification of patients with Brugada syndrome (BrS) remains challenging. Signal-averaged electrocardiogram (SAECG) is a noninvasive tool that can be used to identify the electrophysiologic substrate potentially underlying fatal ventricular arrhythmias. The aim of this meta-analysis is to summarize the existing evidence about the role of late potentials (LP) as a predictor for arrhythmic events in patients with BrS. A systematic search in the MedLine database through to June 2022 without any limitations was performed. Ten studies were included in the quantitative synthesis (1431 patients with BrS, mean age 47.4 years, males 86%). Of these, 1220 patients underwent SAECG evaluation (53.2% had positive LP, and 20.6% had a fatal arrhythmic event). There was a nonsignificant association between positive LPs and fatal arrhythmic events [RR: 2.06 (0.98-4.36), P = 0.06, I 2 = 82%]. By including only studies with patients without a history of fatal arrhythmia, the association between LP with arrhythmic events remained nonsignificant [RR: 1.29 (0.67-2.48), P = 0.44, I 2 = 54%]. In conclusion, there is a possible association between LP and fatal arrhythmic events in patients with BrS, but the literature remains inconclusive. Large cohort studies using a multiparametric approach for risk stratification purposes are needed to improve the risk stratification of BrS and to optimize the selection of BrS patients that should be referred for implantable cardioverter-defibrillator.
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Affiliation(s)
- George Bazoukis
- From the Department of Cardiology, Larnaca General Hospital, Larnaca, Cyprus
- Department of Basic and Clinical Sciences, University of Nicosia Medical School, Nicosia, Cyprus
| | - Konstantinos P Letsas
- Arrhythmia Unit, Laboratory of Cardiac Pacing and Electrophysiology, Onassis Cardiac Surgery Center, Athens, Greece
| | - Tong Liu
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, China
| | - Gary Tse
- Kent and Medway Medical School, Canterbury, Kent, United Kingdom
- Cardiac Electrophysiology Unit, Cardiovascular Analytics Group, China-United Kingdom Collaboration, Hong Kong, China
| | - Alawi Alsheikh-Ali
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
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2
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Guo RX, Tian X, Bazoukis G, Tse G, Hong S, Chen KY, Liu T. Application of artificial intelligence in the diagnosis and treatment of cardiac arrhythmia. Pacing Clin Electrophysiol 2024. [PMID: 38712484 DOI: 10.1111/pace.14995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 03/29/2024] [Accepted: 04/18/2024] [Indexed: 05/08/2024]
Abstract
The rapid growth in computational power, sensor technology, and wearable devices has provided a solid foundation for all aspects of cardiac arrhythmia care. Artificial intelligence (AI) has been instrumental in bringing about significant changes in the prevention, risk assessment, diagnosis, and treatment of arrhythmia. This review examines the current state of AI in the diagnosis and treatment of atrial fibrillation, supraventricular arrhythmia, ventricular arrhythmia, hereditary channelopathies, and cardiac pacing. Furthermore, ChatGPT, which has gained attention recently, is addressed in this paper along with its potential applications in the field of arrhythmia. Additionally, the accuracy of arrhythmia diagnosis can be improved by identifying electrode misplacement or erroneous swapping of electrode position using AI. Remote monitoring has expanded greatly due to the emergence of contactless monitoring technology as wearable devices continue to develop and flourish. Parallel advances in AI computing power, ChatGPT, availability of large data sets, and more have greatly expanded applications in arrhythmia diagnosis, risk assessment, and treatment. More precise algorithms based on big data, personalized risk assessment, telemedicine and mobile health, smart hardware and wearables, and the exploration of rare or complex types of arrhythmia are the future direction.
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Affiliation(s)
- Rong-Xin Guo
- Tianjin Key Laboratory of lonic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, China
| | - Xu Tian
- Tianjin Key Laboratory of lonic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, China
| | - George Bazoukis
- Department of Cardiology, Larnaca General Hospital, Inomenon Polition Amerikis, Larnaca, Cyprus
- Department of Basic and Clinical Sciences, University of Nicosia Medical School, Nicosia, Cyprus
| | - Gary Tse
- Tianjin Key Laboratory of lonic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, China
- Cardiovascular Analytics Group, PowerHealth Research Institute, Hong Kong, China
- School of Nursing and Health Studies, Hong Kong Metropolitan University, Hong Kong, China
| | - Shenda Hong
- National Institute of Health Data Science, Peking University, Beijing, China
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Kang-Yin Chen
- Tianjin Key Laboratory of lonic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, China
| | - Tong Liu
- Tianjin Key Laboratory of lonic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, China
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3
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Camkiran V, Ozden O, Atar I. Long-term follow-up of patients with Brugada syndrome: Foremost risk factors associated with overall arrhythmic events. Medicine (Baltimore) 2024; 103:e37990. [PMID: 38701276 PMCID: PMC11062732 DOI: 10.1097/md.0000000000037990] [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: 11/07/2023] [Accepted: 04/02/2024] [Indexed: 05/05/2024] Open
Abstract
Brugada syndrome (BS) is characterized by ST segment elevation in right precordial leads (V1-V3), ventricular tachycardia (VT), ventricular fibrillation (VF), and sudden cardiac death (SCD) in individuals without structural heart disease. The aim of this study is to contribute to the controversial issue of finding the most valuable marker that can predict poor prognosis during follow-up in patients with a diagnosis of BS. A total of 68 patients diagnosed with BS or had Brugada-type ECG change between January 1997 and July 2012 at the Department of Cardiology of Başkent University Faculty of Medicine, Ankara, Turkey, were included in this cohort study. Patients were screened every 6 months for arrhythmia-related syncope, SCD, appropriate and inappropriate defibrillation (shock), AF development and death; collectively defined as "arrhythmic events" and were the primary endpoints. Patients with and without arrhythmic events were compared. The mean age was 34.9 ± 12.2 years (9-71 years), and 52 (76.5%) patients were male. Mean follow-up was 49.6 ± 37.6 months (4-188 months). Univariate analysis showed that male sex (P = .004), type 1 electrocardiographic pattern (P = .008), SCD (P = .036), VT/VF history (P = .046), requirement for electrophysiological studies (P = .034), implantable cardioverter-defibrillator placement (P = .014) were found to demonstrate significant differences in patients with and without arrhythmic events. In multivariable analyzes, spontaneous type 1 ECG presence (HR = 8.54, 95% CI: 0.38-26.37; P = .003) and VT/VF history (HR = 9.21, 95% CI: 0.004-1.88; P = .002) were found to be independently associated with arrhythmic events. We found the presence of spontaneous type 1 ECG and a history of VT/VF to be associated with increased likelihood of overall arrhythmic events in BS. Given the higher risk of poor prognosis, we recommend additional measures in patients with BS who have these features.
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Affiliation(s)
- Volkan Camkiran
- Department of Cardiology, Goztepe Medicalpark Hospital, Istanbul, Turkey
| | - Ozge Ozden
- Department of Cardiology, Memorial Bahcelievler Hospital, Istanbul, Turkey
| | - Ilyas Atar
- Department of Cardiology, Private Clinic, Ankara, Turkey
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4
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Mehta A, Chandiramani R, Ghosh B, Asatryan B, Hajra A, Barth AS. Catheter Ablation for Channelopathies: When Is Less More? J Clin Med 2024; 13:2384. [PMID: 38673656 PMCID: PMC11051330 DOI: 10.3390/jcm13082384] [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: 03/05/2024] [Revised: 04/05/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Ventricular fibrillation (VF) is a common cause of sudden cardiac death in patients with channelopathies, particularly in the young population. Although pharmacological treatment, cardiac sympathectomy, and implantable cardioverter defibrillators (ICD) have been the mainstay in the management of VF in patients with channelopathies, they are associated with significant adverse effects and complications, leading to poor quality of life. Given these drawbacks, catheter ablation has been proposed as a therapeutic option for patients with channelopathies. Advances in imaging techniques and modern mapping technologies have enabled increased precision in identifying arrhythmia triggers and substrate modification. This has aided our understanding of the underlying pathophysiology of ventricular arrhythmias in channelopathies, highlighting the roles of the Purkinje network and the epicardial right ventricular outflow tract in arrhythmogenesis. This review explores the role of catheter ablation in managing the most common channelopathies (Brugada syndrome, congenital long QT syndrome, short QT syndrome, and catecholaminergic polymorphic ventricular tachycardia). While the initial results for ablation in Brugada syndrome are promising, the long-term efficacy and durability of ablation in different channelopathies require further investigation. Given the genetic and phenotypic heterogeneity of channelopathies, future studies are needed to show whether catheter ablation in patients with channelopathies is associated with a reduction in VF, and psychological distress stemming from recurrent ICD shocks, particularly relative to other available therapeutic options (e.g., quinidine in high-risk Brugada patients).
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Affiliation(s)
- Adhya Mehta
- Department of Internal Medicine, Albert Einstein College of Medicine/Jacobi Medical Center, Bronx, NY 10461, USA
| | - Rishi Chandiramani
- Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Binita Ghosh
- Department of Internal Medicine, SSM Health St. Mary Hospital, St. Louis, MO 63117, USA;
| | - Babken Asatryan
- Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Adrija Hajra
- Department of Internal Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
| | - Andreas S. Barth
- Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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Matusik PT, Bijak P, Kaźnica-Wiatr M, Karpiński M, Matusik PS, Maziarz A, Podolec P, Lelakowski J. Importance of Comprehensive Assessment in Brugada Syndrome. Reply to Kataoka, N.; Imamura, T. How to Diagnose and Risk Stratify Brugada Syndrome. Comment on "Matusik et al. Twelve-Lead ECG, Holter Monitoring Parameters, and Genetic Testing in Brugada Syndrome: Insights from Analysis of Multigenerational Family with a History of Sudden Cardiac Arrest during Physical Activity. J. Clin. Med. 2023, 12, 6581". J Clin Med 2024; 13:811. [PMID: 38337505 PMCID: PMC10856697 DOI: 10.3390/jcm13030811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/19/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
We would like to thank Dr. Imamura for their interest in our study and their valuable comments on diagnostics and risk stratification in Brugada syndrome (BrS) [...].
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Affiliation(s)
- Paweł T. Matusik
- Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, 31-202 Kraków, Poland
- Department of Electrocardiology, St. John Paul II Hospital, 31-202 Kraków, Poland
| | - Piotr Bijak
- Cardiology Outpatient Clinic, St. John Paul II Hospital, 31-202 Kraków, Poland
| | - Magdalena Kaźnica-Wiatr
- Department of Cardiac and Vascular Diseases, St. John Paul II Hospital, 31-202 Kraków, Poland
| | - Marek Karpiński
- Genetic Counselling Outpatient Clinic, St. John Paul II Hospital, 31-202 Kraków, Poland
| | - Patrycja S. Matusik
- Department of Diagnostic Imaging, University Hospital, 30-688 Kraków, Poland
- Department of Radiology, Jagiellonian University Medical College, 31-501 Kraków, Poland
| | - Andrzej Maziarz
- Department of Electrocardiology, St. John Paul II Hospital, 31-202 Kraków, Poland
| | - Piotr Podolec
- Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, 31-202 Kraków, Poland
- Department of Cardiac and Vascular Diseases, St. John Paul II Hospital, 31-202 Kraków, Poland
| | - Jacek Lelakowski
- Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, 31-202 Kraków, Poland
- Department of Electrocardiology, St. John Paul II Hospital, 31-202 Kraków, Poland
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6
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Matusik PT, Bijak P, Kaźnica-Wiatr M, Karpiński M, Matusik PS, Maziarz A, Podolec P, Lelakowski J. Twelve-Lead ECG, Holter Monitoring Parameters, and Genetic Testing in Brugada Syndrome: Insights from Analysis of Multigenerational Family with a History of Sudden Cardiac Arrest during Physical Activity. J Clin Med 2023; 12:6581. [PMID: 37892719 PMCID: PMC10607905 DOI: 10.3390/jcm12206581] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 10/08/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
Brugada syndrome (BrS) is an arrhythmogenic disorder increasing the risk of syncopal episodes and sudden cardiac death. BrS usually runs through families with reduced penetrance and variable expression. We analyzed the multigenerational family of a patient who died after sudden cardiac arrest with post-mortem diagnosis of BrS. We analyzed clinical history, comprehensive arrhythmic risk, genetic findings, and additional tests, including electrocardiogram (ECG), detailed 24-hour Holter ECG results, and standard echocardiography findings, and followed up the patients in the ambulatory clinic. We analyzed a pedigree of 33 members of four generations of the family (19 male and 14 female patients). In this family, we identified 7 patients with BrS (median Modified Shanghai Score and Sieira model: 4.5 (4-6) and 1 (0-4) points, respectively), including both parents of the deceased patient, and 8 relatives with negative sodium channel blocker drug challenge test. Genetic testing revealed a novel mutation in sodium voltage-gated channel alpha subunit 5 (SCN5A) c.941A>G, (p.Tyr314Cys) inherited from the father of the proband. Patients with BrS were characterized by longer P-wave duration (120 (102-155) vs. 92.5 (88-110) ms, p = 0.013) and longer PR intervals (211.3 ±26.3 vs. 161.6 ± 18.9 ms, p = 0.001), along with more frequent positive aVR sign, but did not differ in terms of QRS duration or T-wave characteristics in resting ECGs. BrS patients were characterized by lower mean, minimal, and maximal (for all p ≤ 0.01) heart rates obtained from Holter ECG monitoring, while there was no difference in arrhythmias among investigated patients. Moreover, visual diurnal variability of ST segment changes and fragmented QRS complexes were observed in patients with BrS in Holter ECG monitoring. There were no major arrhythmic events during median follow-up of 68.7 months of alive BrS patients. These results suggest ECG features which may be associated with a diagnosis of BrS and indicate a novel SCN5A variant in BrS patients. Twelve-lead Holter ECG monitoring, with modified precordial leads placement, may be useful in BrS diagnostics and risk stratification in personalized medicine.
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Affiliation(s)
- Paweł T. Matusik
- Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, 31-202 Kraków, Poland
- Department of Electrocardiology, The John Paul II Hospital, 31-202 Kraków, Poland
| | - Piotr Bijak
- Cardiology Outpatient Clinic, The John Paul II Hospital, 31-202 Kraków, Poland
| | - Magdalena Kaźnica-Wiatr
- Department of Cardiac and Vascular Diseases, The John Paul II Hospital, 31-202 Kraków, Poland
| | - Marek Karpiński
- Genetic Counselling Outpatient Clinic, The John Paul II Hospital, 31-202 Kraków, Poland
| | - Patrycja S. Matusik
- Department of Diagnostic Imaging, University Hospital, 30-688 Kraków, Poland
- Chair of Radiology, Jagiellonian University Medical College, 31-501 Kraków, Poland
| | - Andrzej Maziarz
- Department of Electrocardiology, The John Paul II Hospital, 31-202 Kraków, Poland
| | - Piotr Podolec
- Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, 31-202 Kraków, Poland
- Department of Cardiac and Vascular Diseases, The John Paul II Hospital, 31-202 Kraków, Poland
| | - Jacek Lelakowski
- Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, 31-202 Kraków, Poland
- Department of Electrocardiology, The John Paul II Hospital, 31-202 Kraków, Poland
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Lee S, Chung CTS, Radford D, Chou OHI, Lee TTL, Ng ZMW, Roever L, Rajan R, Bazoukis G, Letsas KP, Zeng S, Liu FZ, Wong WT, Liu T, Tse G. Secular trends of health care resource utilization and costs between Brugada syndrome and congenital long QT syndrome: A territory-wide study. Clin Cardiol 2023; 46:1194-1201. [PMID: 37489866 PMCID: PMC10577540 DOI: 10.1002/clc.24102] [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: 04/15/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/26/2023] Open
Abstract
BACKGROUND Health care resource utilization (HCRU) and costs are important metrics of health care burden, but they have rarely been explored in the setting of cardiac ion channelopathies. HYPOTHESIS This study tested the hypothesis that attendance-related HCRUs and costs differed between patients with Brugada syndrome (BrS) and congenital long QT syndrome (LQTS). METHODS This was a retrospective cohort study of consecutive BrS and LQTS patients at public hospitals or clinics in Hong Kong, China. HCRUs and costs (in USD) for Accident and Emergency (A&E), inpatient, general outpatient and specialist outpatient attendances were analyzed between 2001 and 2019 at the cohort level. Comparisons were made using incidence rate ratios (IRRs [95% confidence intervals]). RESULTS Over the 19-year period, 516 BrS (median age of initial presentation: 51 [interquartile range: 38-61] years, 92% male) and 134 LQTS (median age of initial presentation: 21 [9-44] years, 32% male) patients were included. Compared to LQTS patients, BrS patients had lower total costs (2 008 126 [2 007 622-2 008 629] vs. 2 343 864 [2 342 828-2 344 900]; IRR: 0.857 [0.855-0.858]), higher costs for A&E attendances (83 113 [83 048-83 177] vs. 70 604 [70 487-70 721]; IRR: 1.177 [1.165-1.189]) and general outpatient services (2,176 [2,166-2,187] vs. 921 [908-935]; IRR: 2.363 [2.187-2.552]), but lower costs for inpatient stay (1 391 624 [1 391 359-1 391 889] vs. 1 713 742 [1 713 166-1 714 319]; IRR: 0.812 [0.810-0.814]) and lower costs for specialist outpatient services (531 213 [531 049-531 376] vs. 558 597 [558268-558926]; IRR: 0.951 [0.947-0.9550]). CONCLUSIONS Overall, BrS patients consume 14% less health care resources compared to LQTS patients in terms of attendance costs. BrS patients require more A&E and general outpatient services, but less inpatient and specialist outpatient services than LQTS patients.
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Affiliation(s)
- Sharen Lee
- Cardiac Electrophysiology Unit, Cardiovascular Analytics GroupPowerHealth LimitedHong KongChina
| | - Cheuk To Skylar Chung
- Cardiac Electrophysiology Unit, Cardiovascular Analytics GroupPowerHealth LimitedHong KongChina
| | - Danny Radford
- Kent and Medway Medical SchoolUniversity of Kent and Canterbury Christ Church UniversityCanterburyKentUK
| | - Oscar Hou In Chou
- Cardiac Electrophysiology Unit, Cardiovascular Analytics GroupPowerHealth LimitedHong KongChina
| | - Teddy Tai Loy Lee
- Cardiac Electrophysiology Unit, Cardiovascular Analytics GroupPowerHealth LimitedHong KongChina
| | - Zita Man Wai Ng
- Cardiac Electrophysiology Unit, Cardiovascular Analytics GroupPowerHealth LimitedHong KongChina
| | - Leonardo Roever
- Department of Clinical ResearchFederal University of UberlandiaUberlandiaBrazil
| | - Rajesh Rajan
- Department of CardiologySabah Al Ahmed Cardiac CentreKuwait CityKuwait
| | - George Bazoukis
- Second Department of CardiologyEvangelismos General Hospital of AthensAthensGreece
| | | | - Shaoying Zeng
- Guangdong Cardiovascular InstituteGuangdong Provincial People's HospitalGuangzhouChina
| | - Fang Zhou Liu
- Department of Cardiology, Atrial Fibrillation Center, Guangdong Provincial Cardiovascular Institute, Guangdong Provincial People's HospitalGuangdong Academy of Medical SciencesGuangzhouChina
| | - Wing Tak Wong
- State Key Laboratory of Agrobiotechnology (CUHK), School of Life SciencesChinese University of Hong KongHong KongChina
| | - Tong Liu
- Tianjin Key Laboratory of Ionic‐Molecular Function of Cardiovascular Disease, Department of CardiologySecond Hospital of Tianjin Medical UniversityTianjinChina
| | - Gary Tse
- Tianjin Key Laboratory of Ionic‐Molecular Function of Cardiovascular Disease, Department of CardiologySecond Hospital of Tianjin Medical UniversityTianjinChina
- Division of Natural Sciences, Kent and Medway Medical SchoolUniversity of KentCanterburyKentUK
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Leung KSK, Radford D, Huang H, Lakhani I, Li CKH, Hothi SS, Wai AKC, Liu T, Tse G, Lee S. Risk stratification of sudden cardiac death in asymptomatic female Brugada syndrome patients: A literature review. Ann Noninvasive Electrocardiol 2023; 28:e13030. [PMID: 36628595 PMCID: PMC10023885 DOI: 10.1111/anec.13030] [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: 11/18/2022] [Accepted: 11/30/2022] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Risk stratification in Brugada syndrome remains a difficult problem. Given the male predominance of this disease and their elevated risks of arrhythmic events, affected females have received less attention. It is widely known that symptomatic patients are at increased risk of sudden cardiac death (SCD) than asymptomatic patients, while this might be true in the male population; recent studies have shown that this association might not be significant in females. Over the past few decades, numerous markers involving clinical symptoms, electrocardiographic (ECG) indices, and genetic tests have been explored, with several risk-scoring models developed so far. The objective of this study is to review the current evidence of clinical and ECG markers as well as risk scores on asymptomatic females with Brugada syndrome. FINDINGS Gender differences in ECG markers, the yield of genetic findings, and the applicability of risk scores are highlighted. CONCLUSIONS Various clinical, electrocardiographic, and genetic risk factors are available for assessing SCD risk amongst asymptomatic female BrS patients. However, due to the significant gender discrepancy in BrS, the SCD risk amongst females is often underestimated, and there is a lack of research on female-specific risk factors and multiparametric risk scores. Therefore, multinational studies pooling female BrS patients are needed for the development of a gender-specific risk stratification approach amongst asymptomatic BrS patients.
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Affiliation(s)
- Keith Sai Kit Leung
- Cardiac Electrophysiology UnitCardiovascular Analytics GroupHong KongChina
- Faculty of Health and Life SciencesAston University Medical SchoolBirminghamUK
| | - Danny Radford
- Kent and Medway Medical SchoolUniversity of Kent and Canterbury Christ Church UniversityCanterburyUK
| | - Helen Huang
- University of Medicine and Health Science, Royal College of Surgeons in IrelandDublinIreland
| | - Ishan Lakhani
- Cardiac Electrophysiology UnitCardiovascular Analytics GroupHong KongChina
| | | | - Sandeep Singh Hothi
- Heart and Lung CentreNew Cross Hospital, Royal Wolverhampton NHS TrustWolverhamptonUK
| | | | - Tong Liu
- Tianjin Key Laboratory of Ionic‐Molecular Function of Cardiovascular Disease, Department of CardiologyTianjin Institute of Cardiology, Second Hospital of Tianjin Medical UniversityTianjinChina
| | - Gary Tse
- Cardiac Electrophysiology UnitCardiovascular Analytics GroupHong KongChina
- Kent and Medway Medical SchoolUniversity of Kent and Canterbury Christ Church UniversityCanterburyUK
- Emergency Medicine UnitUniversity of Hong KongHong KongChina
| | - Sharen Lee
- Cardiac Electrophysiology UnitCardiovascular Analytics GroupHong KongChina
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9
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Lee S, Chung CT, Chou OHI, Lee TTL, Radford D, Jeevaratnam K, Wong WT, Cheng SH, Mok NS, Liu T, Tse G. Attendance-related Healthcare Resource Utilisation and Costs in Patients With Brugada Syndrome in Hong Kong: A Retrospective Cohort Study. Curr Probl Cardiol 2023; 48:101513. [PMID: 36414041 DOI: 10.1016/j.cpcardiol.2022.101513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 11/13/2022] [Indexed: 11/21/2022]
Abstract
Understanding health care resource utilisation and its associated costs are important for identifying areas of improvement regarding resource allocations. However, there is limited research exploring this issue in the setting of Brugada syndrome (BrS).This was a retrospective territory-wide study of BrS patients from Hong Kong. Healthcare resource utilisation for accident and emergency (A&E), inpatient and specialist outpatient attendances were analyzed over a 19-year period, with their associated costs presented in US dollars. A total of 507 BrS patients with a mean presentation age of 49.9 ± 16.3 years old were included. Of these, 384 patients displayed spontaneous type 1 electrocardiographic (ECG) Brugada pattern and 77 patients had presented with ventricular tachycardia/ventricular fibrillation (VT/VF). At the individual patient level, the median annualized costs were $110 (52-224) at the (A&E) setting, $6812 (1982-32414) at the inpatient setting and $557 (326-1001) for specialist outpatient attendances. Patients with initial VT/VF presentation had overall greater costs in inpatient ($20161 [9147-189215] vs $5290 [1613-24937],P < 0.0001) and specialist outpatient setting ($776 [438-1076] vs $542 [293-972],P = 0.015) compared to those who did not present VT. In addition, patients without Type 1 ECG pattern had greater median costs in the specialist outpatient setting ($7036 [3136-14378] vs $4895 [2409-10554],p=0.019). There is a greater health care demand in the inpatient and specialist outpatient settings for BrS patients. The most expensive attendance type was inpatient setting stay at $6812 per year. The total median annualized cost of BrS patients without VT/VF presentation was 78% lower compared to patients with VT/VF presentation.
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Affiliation(s)
- Sharen Lee
- Cardiac Electrophysiology Unit, Cardiovascular Analytics Group, Hong Kong, Hong Kong, P. R. China-UK
| | - Cheuk To Chung
- Cardiac Electrophysiology Unit, Cardiovascular Analytics Group, Hong Kong, Hong Kong, P. R. China-UK
| | - Oscar Hou In Chou
- Cardiac Electrophysiology Unit, Cardiovascular Analytics Group, Hong Kong, Hong Kong, P. R. China-UK
| | - Teddy Tai Loy Lee
- Cardiac Electrophysiology Unit, Cardiovascular Analytics Group, Hong Kong, Hong Kong, P. R. China-UK
| | - Danny Radford
- Kent and Medway Medical School, Canterbury, Kent, UK
| | | | - Wing Tak Wong
- School of Life Sciences, Chinese University of Hong Kong, Hong Kong, Hong Kong, P. R. China
| | - Shuk Han Cheng
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, Hong Kong, P.R.China
| | - Ngai Shing Mok
- Department of Medicine and Geriatrics, Princess Margaret Hospital, Hong Kong Hospital Authority, Hong Kong, Hong Kong, P.R.China
| | - Tong Liu
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, Tianjin, P.R.China.
| | - Gary Tse
- Kent and Medway Medical School, Canterbury, Kent, UK; Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, Tianjin, P.R.China; School of Nursing and Health Studies, Hong Kong Metropolitan University, Hong Kong, China.
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Comparing the performance of published risk scores in Brugada syndrome: a multi-center cohort study. Curr Probl Cardiol 2022; 47:101381. [PMID: 36058344 DOI: 10.1016/j.cpcardiol.2022.101381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 02/06/2023]
Abstract
INTRODUCTION The management of Brugada Syndrome (BrS) patients at intermediate risk of arrhythmic events remains controversial. The present study evaluated the predictive performance of different risk scores in an Asian BrS population and its intermediate risk subgroup. METHODS This retrospective cohort study included consecutive patients diagnosed with BrS from January 1st, 1997 to June 20th, 2020 from Hong Kong. The primary outcome is sustained ventricular tachyarrhythmias. Two novel risk risk scores and seven machine learning-based models (random survival forest, Ada boost classifier, Gaussian naïve Bayes, light gradient boosting machine, random forest classifier, gradient boosting classifier and decision tree classifier) were developed. The area under the receiver operator characteristic (ROC) curve (AUC) [95% confidence intervals] was compared between the different models. RESULTS This study included 548 consecutive BrS patients (7% female, age at diagnosis: 50±16 years, follow-up: 84±55 months). For the whole cohort, the score developed by Sieira et al. showed the best performance (AUC: 0.806 [0.747-0.865]). A novel risk score was developed using the Sieira score and additional variables significant on univariable Cox regression (AUC: 0.855 [0.808-0.901]). A simpler score based on non-invasive results only showed a statistically comparable AUC (0.784 [0.724-0.845]), improved using random survival forests (AUC: 0.942 [0.913-0.964]). For the intermediate risk subgroup (N=274), a gradient boosting classifier model showed the best performance (AUC: 0.814 [0.791-0.832]). CONCLUSION A simple risk score based on clinical and electrocardiographic variables showed a good performance for predicting VT/VF, improved using machine learning. Abstract: The management of Brugada Syndrome (BrS) patients at intermediate risk of arrhythmic events remains controversial. This study evaluated the predictive performance of published risk scores in a cohort of BrS patients from Hong Kong (N=548) and its intermediate risk subgroup (N=274). A novel risk score developed by modifying the best performing existing score (by. Sieira et al.) showed an area under the curve of 0.855 and 0.760 for the whole BrS cohort and the intermediate risk subgroup, respectively. The performance of the different scores was significantly improved machine learning-based methods, such as random survival forests and gradient boosting classifier.
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Aziz HM, Zarzecki MP, Garcia-Zamora S, Kim MS, Bijak P, Tse G, Won HH, Matusik PT. Pathogenesis and Management of Brugada Syndrome: Recent Advances and Protocol for Umbrella Reviews of Meta-Analyses in Major Arrhythmic Events Risk Stratification. J Clin Med 2022; 11:jcm11071912. [PMID: 35407520 PMCID: PMC8999897 DOI: 10.3390/jcm11071912] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/14/2022] [Accepted: 03/25/2022] [Indexed: 12/13/2022] Open
Abstract
Brugada syndrome (BrS) is a primary electrical disease associated with life-threatening arrhythmias. It is estimated to cause at least 20% of sudden cardiac deaths (SCDs) in patients with normal cardiac anatomy. In this review paper, we discuss recent advances in complex BrS pathogenesis, diagnostics, and current standard approaches to major arrhythmic events (MAEs) risk stratification. Additionally, we describe a protocol for umbrella reviews to systematically investigate clinical, electrocardiographic, electrophysiological study, programmed ventricular stimulation, and genetic factors associated with BrS, and the risk of MAEs. Our evaluation will include MAEs such as sustained ventricular tachycardia, ventricular fibrillation, appropriate implantable cardioverter–defibrillator therapy, sudden cardiac arrest, and SCDs from previous meta-analytical studies. The protocol was written following the Preferred Reporting Items for Systematic review and Meta-Analysis Protocols (PRISMA-P) guidelines. We plan to extensively search PubMed, Embase, and Scopus databases for meta-analyses concerning risk-stratification in BrS. Data will be synthesized integratively with transparency and accuracy. Heterogeneity patterns across studies will be reported. The Joanna Briggs Institute (JBI) methodology, A MeaSurement Tool to Assess systematic Reviews 2 (AMSTAR 2), and the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) are planned to be applied for design and execution of our evidence-based research. To the best of our knowledge, these will be the first umbrella reviews to critically evaluate the current state of knowledge in BrS risk stratification for life-threatening ventricular arrhythmias, and will potentially contribute towards evidence-based guidance to enhance clinical decisions.
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Affiliation(s)
- Hasina Masha Aziz
- Faculty of Medicine, Jagiellonian University Medical College, 31-530 Kraków, Poland;
| | - Michał P. Zarzecki
- Department of Anatomy, Jagiellonian University Medical College, 31-034 Kraków, Poland;
| | | | - Min Seo Kim
- Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Samsung Medical Center, Seoul 06351, Korea;
| | - Piotr Bijak
- John Paul II Hospital, 31-202 Kraków, Poland;
| | - Gary Tse
- Cardiac Electrophysiology Unit, Cardiovascular Analytics Group, Hong Kong, China;
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin 300070, China
- Kent and Medway Medical School, University of Kent and Canterbury Christ Church University, Canterbury CT2 7FS, UK
| | - Hong-Hee Won
- Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Samsung Genome Institute, Samsung Medical Center, Seoul 06351, Korea;
| | - Paweł T. Matusik
- Department of Electrocardiology, Institute of Cardiology, Faculty of Medicine, Jagiellonian University Medical College, 31-202 Kraków, Poland
- Department of Electrocardiology, The John Paul II Hospital, 31-202 Kraków, Poland
- Correspondence:
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