The Risk of Ventricular Arrhythmias between Alcohol Septal Ablation and Septal Myectomy in Hypertrophic Cardiomyopathy: A Meta-Analysis on Septal Reduction Therapy

Background: Alcohol septal ablation (ASA) has been more commonly applied in medical refractory hypertrophic obstructive cardiomyopathy (HOCM) compared with septal myectomy (SM), however its potential to create a proarrhythmic substrate is increased. Methods: A systematic search was performed in PubM...

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Main Authors: Wei Tang, Menghui Liu, Jie Li, Rongxuan Chang, Chen Su, Xiaoyu Zhang, Lichun Wang
Format: Article
Language:English
Published: IMR Press 2022-11-01
Series:Reviews in Cardiovascular Medicine
Subjects:
Online Access:https://www.imrpress.com/journal/RCM/23/12/10.31083/j.rcm2312391
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author Wei Tang
Menghui Liu
Jie Li
Rongxuan Chang
Chen Su
Xiaoyu Zhang
Lichun Wang
author_facet Wei Tang
Menghui Liu
Jie Li
Rongxuan Chang
Chen Su
Xiaoyu Zhang
Lichun Wang
author_sort Wei Tang
collection DOAJ
description Background: Alcohol septal ablation (ASA) has been more commonly applied in medical refractory hypertrophic obstructive cardiomyopathy (HOCM) compared with septal myectomy (SM), however its potential to create a proarrhythmic substrate is increased. Methods: A systematic search was performed in PubMed, EMBASE, Web of Science, and the Cochrane Library from inception to October 2020. Fixed or random effects models were used to estimate the risk ratios (RR) for ventricular arrhythmia events or other outcomes between the SM and ASA cohorts. Results: Twenty studies with 8025 patients were included. Pool analysis showed that the incidence of ventricular tachycardia (VT)/ventricular fibrillation (VF), which included appropriate implantable cardioverter defibrillator (ICD) intervention, was significantly higher in the ASA cohort than that in the SM cohort (ASA vs SM: 10% (345/3312) vs 5% (161/3227) (RR = 1.98, 95% CI (confidence interval), 1.65–2.37; p < 0.00001, I2 = 0%). In both groups, more than 90% of VT/VF events occurred in the early phase (during the procedure, during hospitalization or within 30 days after the procedure) (ASA: 94.20%; SM: 94.41%). Further subgroup analysis also showed that the ASA group had a higher incidence of VT/VF in both the early phase (RR = 1.94, 95% CI, 1.61–2.33; p < 0.0001, I2 = 0%) and the late phase (RR = 2.80, 95% CI, 1.00–7.89; p = 0.05, I2 = 33%). Furthermore, although the risks of sudden cardiac death (SCD) were similar between the ASA and SM groups, a higher incidence of sudden cardiac arrest (SCA), which included SCD and resuscitated SCA, was observed in the ASA group (RR = 2.30, 95% CI, 1.35–3.94; p = 0.002, I2 = 0%). Conclusions: In patients with HOCM, those who received ASA showed a higher incidence of VF/VT and SCD combined with resuscitated SCA. The majority of VT/VF occurred in the early phase.
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spelling doaj.art-f137c9d34a774c27a695c16656b280d52022-12-28T05:34:20ZengIMR PressReviews in Cardiovascular Medicine1530-65502022-11-01231239110.31083/j.rcm2312391S1530-6550(22)00741-4The Risk of Ventricular Arrhythmias between Alcohol Septal Ablation and Septal Myectomy in Hypertrophic Cardiomyopathy: A Meta-Analysis on Septal Reduction TherapyWei Tang0Menghui Liu1Jie Li2Rongxuan Chang3Chen Su4Xiaoyu Zhang5Lichun Wang6Department of Cardiology, The First Affiliated Hospital of Sun Yat-sen University, 510080 Guangzhou, Guangdong, ChinaDepartment of Cardiology, The First Affiliated Hospital of Sun Yat-sen University, 510080 Guangzhou, Guangdong, ChinaDepartment of Cardiology, The First Affiliated Hospital of Sun Yat-sen University, 510080 Guangzhou, Guangdong, ChinaDepartment of Cardiology, The First Affiliated Hospital of Sun Yat-sen University, 510080 Guangzhou, Guangdong, ChinaDepartment of Cardiology, The First Affiliated Hospital of Sun Yat-sen University, 510080 Guangzhou, Guangdong, ChinaDepartment of Cardiology, The First Affiliated Hospital of Sun Yat-sen University, 510080 Guangzhou, Guangdong, ChinaDepartment of Cardiology, The First Affiliated Hospital of Sun Yat-sen University, 510080 Guangzhou, Guangdong, ChinaBackground: Alcohol septal ablation (ASA) has been more commonly applied in medical refractory hypertrophic obstructive cardiomyopathy (HOCM) compared with septal myectomy (SM), however its potential to create a proarrhythmic substrate is increased. Methods: A systematic search was performed in PubMed, EMBASE, Web of Science, and the Cochrane Library from inception to October 2020. Fixed or random effects models were used to estimate the risk ratios (RR) for ventricular arrhythmia events or other outcomes between the SM and ASA cohorts. Results: Twenty studies with 8025 patients were included. Pool analysis showed that the incidence of ventricular tachycardia (VT)/ventricular fibrillation (VF), which included appropriate implantable cardioverter defibrillator (ICD) intervention, was significantly higher in the ASA cohort than that in the SM cohort (ASA vs SM: 10% (345/3312) vs 5% (161/3227) (RR = 1.98, 95% CI (confidence interval), 1.65–2.37; p < 0.00001, I2 = 0%). In both groups, more than 90% of VT/VF events occurred in the early phase (during the procedure, during hospitalization or within 30 days after the procedure) (ASA: 94.20%; SM: 94.41%). Further subgroup analysis also showed that the ASA group had a higher incidence of VT/VF in both the early phase (RR = 1.94, 95% CI, 1.61–2.33; p < 0.0001, I2 = 0%) and the late phase (RR = 2.80, 95% CI, 1.00–7.89; p = 0.05, I2 = 33%). Furthermore, although the risks of sudden cardiac death (SCD) were similar between the ASA and SM groups, a higher incidence of sudden cardiac arrest (SCA), which included SCD and resuscitated SCA, was observed in the ASA group (RR = 2.30, 95% CI, 1.35–3.94; p = 0.002, I2 = 0%). Conclusions: In patients with HOCM, those who received ASA showed a higher incidence of VF/VT and SCD combined with resuscitated SCA. The majority of VT/VF occurred in the early phase.https://www.imrpress.com/journal/RCM/23/12/10.31083/j.rcm2312391hypertrophic cardiomyopathyseptal reduction therapyalcohol septal ablationseptal myectomyventricular arrhythmiasmeta-analysis
spellingShingle Wei Tang
Menghui Liu
Jie Li
Rongxuan Chang
Chen Su
Xiaoyu Zhang
Lichun Wang
The Risk of Ventricular Arrhythmias between Alcohol Septal Ablation and Septal Myectomy in Hypertrophic Cardiomyopathy: A Meta-Analysis on Septal Reduction Therapy
Reviews in Cardiovascular Medicine
hypertrophic cardiomyopathy
septal reduction therapy
alcohol septal ablation
septal myectomy
ventricular arrhythmias
meta-analysis
title The Risk of Ventricular Arrhythmias between Alcohol Septal Ablation and Septal Myectomy in Hypertrophic Cardiomyopathy: A Meta-Analysis on Septal Reduction Therapy
title_full The Risk of Ventricular Arrhythmias between Alcohol Septal Ablation and Septal Myectomy in Hypertrophic Cardiomyopathy: A Meta-Analysis on Septal Reduction Therapy
title_fullStr The Risk of Ventricular Arrhythmias between Alcohol Septal Ablation and Septal Myectomy in Hypertrophic Cardiomyopathy: A Meta-Analysis on Septal Reduction Therapy
title_full_unstemmed The Risk of Ventricular Arrhythmias between Alcohol Septal Ablation and Septal Myectomy in Hypertrophic Cardiomyopathy: A Meta-Analysis on Septal Reduction Therapy
title_short The Risk of Ventricular Arrhythmias between Alcohol Septal Ablation and Septal Myectomy in Hypertrophic Cardiomyopathy: A Meta-Analysis on Septal Reduction Therapy
title_sort risk of ventricular arrhythmias between alcohol septal ablation and septal myectomy in hypertrophic cardiomyopathy a meta analysis on septal reduction therapy
topic hypertrophic cardiomyopathy
septal reduction therapy
alcohol septal ablation
septal myectomy
ventricular arrhythmias
meta-analysis
url https://www.imrpress.com/journal/RCM/23/12/10.31083/j.rcm2312391
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