1
|
Oh IY. Multicenter Cohort Analysis Unveil Inherited Arrhythmia in Korea. Korean Circ J 2023; 53:708-709. [PMID: 37880831 PMCID: PMC10625853 DOI: 10.4070/kcj.2023.0214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/24/2023] [Indexed: 10/27/2023] Open
Affiliation(s)
- Il-Young Oh
- Division of Cardiology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
| |
Collapse
|
2
|
Yakkali S, Teresa Selvin S, Thomas S, Bikeyeva V, Abdullah A, Radivojevic A, Abu Jad AA, Ravanavena A, Ravindra C, Igweonu-Nwakile EO, Ali S, Paul S, Hamid P. Why Is There an Increased Risk for Sudden Cardiac Death in Patients With Early Repolarization Syndrome? Cureus 2022; 14:e26820. [PMID: 35971350 PMCID: PMC9374281 DOI: 10.7759/cureus.26820] [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: 06/07/2022] [Accepted: 07/13/2022] [Indexed: 11/29/2022] Open
Abstract
The last two decades have changed the viewpoint on early repolarization syndrome (ERS). The prevalence of the early repolarization pattern is variable and ranges between 3-24% depending upon age, gender, and criteria used for J-point upliftment from baseline (0.05mV vs. 1 mV). While this pattern was previously linked with a benign result, multiple recent investigations have found a link between early repolarization and Sudden Cardiac Death (SCD) by causing life-threatening arrhythmias like Ventricular tachycardia/Ventricular fibrillation, a condition known as early repolarization syndrome. The syndrome falls under a broader bracket of J wave syndromes, which can be caused by early repolarization or depolarization abnormalities. The characteristics of early repolarization that are considered high risk for Sudden Cardiac Death include the amplitude of J-point upliftment from baseline ( > 0.2 mV), Inferior-lateral location of Early Repolarization pattern, and horizontal and downsloping ST-segment. Patients with symptomatic early repolarisation patterns on ECG are more likely to have repeated cardiac episodes. Implantable Cardioverter-Defibrillator (ICD) implantation and isoproterenol are the recommended treatments in symptomatic patients. On the other hand, asymptomatic patients with early repolarization patterns are prevalent and have a better outcome. Risk categorization is still obscure in asymptomatic early repolarization patterns. This traditional review outlines the known knowledge of pathophysiology behind the increased risk of sudden cardiac death, risk stratification of patients with ERS, and the treatment guidelines for patients with ERS. Further prospective studies are recommended to elucidate the exact mechanism for ventricular arrhythmogenesis in ERS patients and to risk stratifying asymptomatic patients with ERS.
Collapse
|
3
|
Ooi YS, Amer M, Qi D, Yang Z, Gao C, Yan GX. Delta QRS distinguishes I to -mediated J waves from pseudo J waves produced by conduction delay on body surface electrocardiographic. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2021; 44:1832-1841. [PMID: 34498737 DOI: 10.1111/pace.14359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 06/03/2021] [Accepted: 09/05/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND On surface electrocardiographic (ECGs), it is difficult to differentiate Ito -mediated J waves, a repolarization phenomenon seen in J wave syndromes (JWS) from terminal QRS deflections that mimic J waves (pseudo J waves) in intraventricular conduction delay (IVCD), an abnormality in depolarization. We hypothesize that the difference between the "maximum QRS duration" inclusive of J point or terminal QRS deflections and the minimum QRS duration identified across a 12-lead ECG is significantly larger in Ito -mediated J waves, and can serve as a marker to make this distinction. METHODS A retrospective analysis was performed on adults with ECGs consisting of one of the four following manifestations: J waves associated with hypothermia and early repolarization, and pseudo J waves associated with right bundle branch block (RBBB) and non-specific intraventricular conduction delay (NS-IVCD). All ECGs were assessed individually and the maximum and minimum discrete QRS deflections on 12-lead tracings, defined as "QRSmax " and QRSmin , were identified. The difference between "QRSmax " and QRSmin , designated as ∆QRS, was calculated and compared across the studied populations. RESULTS A total of 60 patients consisting of 15 patients in each arm were included in the study. ΔQRS was significantly larger in the hypothermia and early repolarization groups, compared to RBBB and NS-IVCD (p < .0001), with the following mean ∆QRS: hypothermia 54.3 ± 13.7 ms, early repolarization pattern 47.3 ± 15.3 ms, RBBB 19.3 ± 6.5 ms, and NS-IVCD 16.0 ± 6.6 ms. CONCLUSION ∆QRS may serve as a reliable ECG parameter for distinguishing Ito -mediated J waves from pseudo J waves produced by delayed intraventricular conduction.
Collapse
Affiliation(s)
| | - Mostafa Amer
- Lankenau Medical Center, Wynnewood, Pennsylvania, USA
| | - Datun Qi
- Fuwai Huazhong Hospital, Zhengzhou, Henan, PR China.,Lankenau Institute for Medical Research, Wynnewood, Pennsylvania, USA
| | - Zhen Yang
- General Hospital of Ningxia Medical University, PR China
| | - Chuanyu Gao
- Fuwai Huazhong Hospital, Zhengzhou, Henan, PR China
| | - Gan-Xin Yan
- Lankenau Medical Center, Wynnewood, Pennsylvania, USA.,Fuwai Huazhong Hospital, Zhengzhou, Henan, PR China.,Lankenau Institute for Medical Research, Wynnewood, Pennsylvania, USA.,Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| |
Collapse
|
4
|
Salazar JW, Goldschlager N. Distinguishing Entities on the J Wave Spectrum: Solving a Cold Case. JAMA Intern Med 2020; 180:898-899. [PMID: 32282010 DOI: 10.1001/jamainternmed.2020.0790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- James W Salazar
- Department of Medicine, University of California, San Francisco
| | - Nora Goldschlager
- Division of Cardiology, Department of Medicine, University of California, San Francisco.,Division of Cardiology, Department of Medicine, Zuckerberg San Francisco General Hospital, San Francisco, California
| |
Collapse
|
5
|
Haïssaguerre M, Nademanee K, Hocini M, Cheniti G, Duchateau J, Frontera A, Sacher F, Derval N, Denis A, Pambrun T, Dubois R, Jaïs P, Benoist D, Walton RD, Nogami A, Coronel R, Potse M, Bernus O. Depolarization versus repolarization abnormality underlying inferolateral J-wave syndromes: New concepts in sudden cardiac death with apparently normal hearts. Heart Rhythm 2019; 16:781-790. [PMID: 30391571 PMCID: PMC6486498 DOI: 10.1016/j.hrthm.2018.10.040] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Indexed: 12/22/2022]
Abstract
Early repolarization indicates a distinct electrocardiographic phenotype affecting the junction between the QRS complex and the ST segment in inferolateral leads (inferolateral J-wave syndromes). It has been considered a benign electrocardiographic variant for decades, but recent clinical studies have demonstrated its arrhythmogenicity in a small subset, supported by experimental studies showing transmural dispersion of repolarization. Here we review the current knowledge and the issues of risk stratification that limit clinical management. In addition, we report on new mapping data of patients refractory to pharmacologic treatment using high-density electrogram mapping at the time of inscription of J wave. These data demonstrate that distinct substrates, delayed depolarization, and abnormal early repolarization underlie inferolateral J-wave syndromes, with significant implications. Finally, based on these data, we propose a new simplified mechanistic classification of sudden cardiac deaths without apparent structural heart disease.
Collapse
Affiliation(s)
- Michel Haïssaguerre
- Bordeaux University Hospital, Bordeaux, France; IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France.
| | | | - Mélèze Hocini
- Bordeaux University Hospital, Bordeaux, France; IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| | | | - Josselin Duchateau
- Bordeaux University Hospital, Bordeaux, France; IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| | | | - Frédéric Sacher
- Bordeaux University Hospital, Bordeaux, France; IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| | - Nicolas Derval
- Bordeaux University Hospital, Bordeaux, France; IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| | - Arnaud Denis
- Bordeaux University Hospital, Bordeaux, France; IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| | - Thomas Pambrun
- Bordeaux University Hospital, Bordeaux, France; IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| | - Rémi Dubois
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| | - Pierre Jaïs
- Bordeaux University Hospital, Bordeaux, France; IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| | - David Benoist
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| | - Richard D Walton
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| | | | - Ruben Coronel
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France
| | - Mark Potse
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France
| | - Olivier Bernus
- IHU LIRYC, Electrophysiology and Heart Modeling Institute, Bordeaux, France; University of Bordeaux, U1045, Bordeaux, France
| |
Collapse
|
6
|
Tse G, Gong M, Li CKH, Leung KSK, Georgopoulos S, Bazoukis G, Letsas KP, Sawant AC, Mugnai G, Wong MC, Yan GX, Brugada P, Chierchia G, de Asmundis C, Baranchuk A, Liu T. T peak-T end, T peak-T end/QT ratio and T peak-T end dispersion for risk stratification in Brugada Syndrome: A systematic review and meta-analysis. J Arrhythm 2018; 34:587-597. [PMID: 30555602 PMCID: PMC6288557 DOI: 10.1002/joa3.12118] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 07/30/2018] [Accepted: 08/14/2018] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Brugada syndrome is an ion channelopathy that predisposes affected subjects to ventricular tachycardia/fibrillation (VT/VF), potentially leading to sudden cardiac death (SCD). Tpeak-Tend intervals, (Tpeak-Tend)/QT ratio and Tpeak-Tend dispersion have been proposed for risk stratification, but their predictive values in Brugada syndrome have been challenged recently. METHODS A systematic review and meta-analysis was conducted to examine their values in predicting arrhythmic and mortality outcomes in Brugada Syndrome. PubMed and Embase databases were searched until 1 May 2018, identifying 29 and 57 studies. RESULTS Nine studies involving 1740 subjects (mean age 45 years old, 80% male, mean follow-up duration was 68 ± 27 months) were included. The mean Tpeak-Tend interval was 98.9 ms (95% CI: 90.5-107.2 ms) for patients with adverse events (ventricular arrhythmias or SCD) compared to 87.7 ms (95% CI: 80.5-94.9 ms) for those without such events, with a mean difference of 11.9 ms (95% CI: 3.6-20.2 ms, P = 0.005; I 2 = 86%). Higher (Tpeak-Tend)/QT ratios (mean difference = 0.019, 95% CI: 0.003-0.036, P = 0.024; I 2 = 74%) and Tpeak-Tend dispersion (mean difference = 7.8 ms, 95% CI: 2.1-13.4 ms, P = 0.007; I 2 = 80%) were observed for the event-positive group. CONCLUSION Tpeak-Tend interval, (Tpeak-Tend)/QT ratio and Tpeak-Tend dispersion were higher in high-risk than low-risk Brugada subjects, and thus offer incremental value for risk stratification.
Collapse
Affiliation(s)
- Gary Tse
- Department of Medicine and Therapeutics, Faculty of MedicineChinese University of Hong KongHong KongChina
- Li Ka Shing Institute of Health Sciences, Faculty of MedicineChinese University of Hong KongHong KongChina
- Shenzhen Research InstituteThe Chinese University of Hong KongShenzhenChina
| | - Mengqi Gong
- Tianjin Key Laboratory of Ionic‐Molecular Function of Cardiovascular Disease, Department of CardiologyTianjin Institute of Cardiology, Second Hospital of Tianjin Medical UniversityTianjinChina
| | - Christien Ka Hou Li
- Department of Medicine and Therapeutics, Faculty of MedicineChinese University of Hong KongHong KongChina
- Li Ka Shing Institute of Health Sciences, Faculty of MedicineChinese University of Hong KongHong KongChina
- Shenzhen Research InstituteThe Chinese University of Hong KongShenzhenChina
- Faculty of MedicineNewcastle UniversityNewcastleUK
| | - Keith Sai Kit Leung
- Department of Medicine and Therapeutics, Faculty of MedicineChinese University of Hong KongHong KongChina
- Li Ka Shing Institute of Health Sciences, Faculty of MedicineChinese University of Hong KongHong KongChina
- Shenzhen Research InstituteThe Chinese University of Hong KongShenzhenChina
- Aston Medical SchoolAston UniversityBirminghamUK
| | - Stamatis Georgopoulos
- Second Department of Cardiology, Laboratory of Cardiac ElectrophysiologyEvangelismos General Hospital of AthensAthensGreece
| | - George Bazoukis
- Second Department of Cardiology, Laboratory of Cardiac ElectrophysiologyEvangelismos General Hospital of AthensAthensGreece
| | - Konstantinos P. Letsas
- Second Department of Cardiology, Laboratory of Cardiac ElectrophysiologyEvangelismos General Hospital of AthensAthensGreece
| | - Abhishek C. Sawant
- Division of Cardiology, Department of Internal MedicineState University of New York at BuffaloBuffaloNew York
| | - Giacomo Mugnai
- Heart Rhythm Management Center, Postgraduate Program in Cardiac Electrophysiology and PacingUniversitair Ziekenhuis Brussel‐Vrije Universiteit BrusselBrusselsBelgium
| | - Martin C.S. Wong
- JC School of Public Health and Primary CareThe Chinese University of Hong KongHong KongChina
| | - Gan Xin Yan
- Lankenau Institute for Medical Research and Lankenau Medical CenterWynnewoodPennsylvania
- Beijing Anzhen Hospital, Capital Medical UniversityBeijingChina
| | - Pedro Brugada
- Heart Rhythm Management Center, Postgraduate Program in Cardiac Electrophysiology and PacingUniversitair Ziekenhuis Brussel‐Vrije Universiteit BrusselBrusselsBelgium
| | - Gian‐Battista Chierchia
- Heart Rhythm Management Center, Postgraduate Program in Cardiac Electrophysiology and PacingUniversitair Ziekenhuis Brussel‐Vrije Universiteit BrusselBrusselsBelgium
| | - Carlo de Asmundis
- Heart Rhythm Management Center, Postgraduate Program in Cardiac Electrophysiology and PacingUniversitair Ziekenhuis Brussel‐Vrije Universiteit BrusselBrusselsBelgium
| | - Adrian Baranchuk
- Division of CardiologyKingston General Hospital, Queen's UniversityKingstonONCanada
| | - Tong Liu
- Tianjin Key Laboratory of Ionic‐Molecular Function of Cardiovascular Disease, Department of CardiologyTianjin Institute of Cardiology, Second Hospital of Tianjin Medical UniversityTianjinChina
| | | |
Collapse
|
7
|
Electrocardiographic J wave: Early repolarization, Brugada wave, and conduction delay. Heart Rhythm 2018; 16:81-82. [PMID: 30118884 DOI: 10.1016/j.hrthm.2018.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Indexed: 11/21/2022]
|
8
|
Meta-analysis of T peak-T end and T peak-T end/QT ratio for risk stratification in congenital long QT syndrome. J Electrocardiol 2018; 51:396-401. [PMID: 29550106 DOI: 10.1016/j.jelectrocard.2018.03.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 02/13/2018] [Accepted: 03/06/2018] [Indexed: 01/13/2023]
Abstract
BACKGROUND AND OBJECTIVES Congenital long QT syndrome (LQTS) predisposes affected individuals to ventricular tachycardia/fibrillation (VF/VF), potentially resulting in sudden cardiac death. The Tpeak-Tend interval and the Tpeak-Tend/QT ratio, electrocardiographic markers of dispersion of ventricular repolarization, were proposed for risk stratification but their predictive values in LQTS have been controversial. A systematic review and meta-analysis was conducted to examine the value of Tpeak-Tend intervals and Tpeak-Tend/QT ratios in predicting arrhythmic and mortality outcomes in congenital LQTS. METHOD PubMed and Embase databases were searched until 9th May 2017, identifying 199 studies. RESULTS Five studies on long QT syndrome were included in the final meta-analysis. Tpeak-Tend intervals were longer (mean difference [MD]: 13ms, standard error [SE]: 4ms, P=0.002; I2=34%) in congenital LQTS patients with adverse events [syncope, ventricular arrhythmias or sudden cardiac death] compared to LQTS patients without such events. By contrast, Tpeak-Tend/QT ratios were not significantly different between the two groups (MD: 0.02, SE: 0.02, P=0.26; I2=0%). CONCLUSION This meta-analysis showed that Tpeak-Tend interval is significant higher in individuals who are at elevated risk of adverse events in congenital LQTS, offering incremental value for risk stratification.
Collapse
|
9
|
Wang A, Li X, Dookhun MN, Zhang T, Xie P, Cao Y. A female patient with hypokalaemia-induced J wave syndrome: An unusual case report. Medicine (Baltimore) 2017; 96:e8098. [PMID: 28930854 PMCID: PMC5617721 DOI: 10.1097/md.0000000000008098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
RATIONALE Prominent J waves can be seen in life-threatening cardiac arrhythmias such as Brugada syndrome, early repolarization syndrome, and ventricular fibrillation. We herein present an unusual case report of hypokalemia-induced J wave syndrome and ST (a part of ECG) segment elevation. PATIENTS CONCERNS A 52-year-old woman with chief complaints of chest pain for 2 hours and diarrhea showed a marked hypokalemia (2.8 mmol/L) and slightly elevated creatine kinase-MB (CK-MB) (57.5 U/L). The electrocardiographic (ECG) recording was normal upon admission and computed tomography (CT) aorta angiography excluded an aorta dissection. ECG done 17 hours after admission showed ST segment elevation and elevated J wave in leads II, III and aVF, and fusion of T and U wave in all leads. DIAGNOSIS We first thought that the diagnosis of this patient was acute myocardial syndrome. INTERVENTION Potassium chloride and oflocaxin treatment was given to the patient. OUTCOMES Laboratory test showed the level of serum potassium ion increased to 3.4 mmol/L and CK-MB did not have any significant change. The infusion of potassium chloride-induced disappearance of the elevated J wave, although QT (a part of ECG) intervals were still longer than that upon admission. LESSONS This case tells us that hypokalaemia might induce J wave and elevated ST segments which should be distinguished from acute myocardial syndrome.
Collapse
Affiliation(s)
- Aqian Wang
- Department of Cardiology, Gansu Provincial Hospital
- School of Clinical Medicine, Gansu University of Chinese Medicine, Lanzhou
| | - Xiang Li
- Department of Intensive Care, Minhang Hospital, Fudan University, Shanghai
| | - Muhammad Nabeel Dookhun
- Department of Cardiology, the First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | | | - Ping Xie
- Department of Cardiology, Gansu Provincial Hospital
| | - Yunshan Cao
- Department of Cardiology, Gansu Provincial Hospital
| |
Collapse
|
10
|
J Waves for Predicting Cardiac Events in Hypertrophic Cardiomyopathy. JACC Clin Electrophysiol 2017; 3:1136-1142. [PMID: 29759496 DOI: 10.1016/j.jacep.2017.03.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 03/21/2017] [Accepted: 03/30/2017] [Indexed: 01/13/2023]
Abstract
OBJECTIVES This study sought to investigate whether the presence of J waves was associated with cardiac events in patients with hypertrophic cardiomyopathy (HCM). BACKGROUND It has been uncertain whether the presence of J waves predicts life-threatening cardiac events in patients with HCM. METHODS This study evaluated consecutive 338 patients with HCM (207 men; age 61 ± 17 years of age). A J-wave was defined as J-point elevation >0.1 mV in at least 2 contiguous inferior and/or lateral leads. Cardiac events were defined as sudden cardiac death, ventricular fibrillation or sustained ventricular tachycardia, or appropriate implantable cardiac defibrillator therapy. The study also investigated whether adding the J-wave in a conventional risk model improved a prediction of cardiac events. RESULTS J waves were seen in 46 (13.6%) patients at registration. Cardiac events occurred in 31 patients (9.2%) during median follow-up of 4.9 years (interquartile range: 2.6 to 7.1 years). In a Cox proportional hazards model, the presence of J waves was significantly associated with cardiac events (adjusted hazard ratio: 4.01; 95% confidence interval [CI]: 1.78 to 9.05; p = 0.001). Compared with the conventional risk model, the model using J waves in addition to conventional risks better predicted cardiac events (net reclassification improvement, 0.55; 95% CI: 0.20 to 0.90; p = 0.002). CONCLUSIONS The presence of J waves was significantly associated with cardiac events in HCM. Adding J waves to conventional cardiac risk factors improved prediction of cardiac events. Further confirmatory studies are needed before considering J-point elevation as a marker of risk for use in making management decisions regarding risk in patients with HCM.
Collapse
|
11
|
A1427S missense mutation in scn5a causes type 1 brugada pattern, recurrent ventricular tachyarrhythmias and right ventricular structural abnormalities. Res Cardiovasc Med 2017. [DOI: 10.5812/cardiovascmed.42085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|