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Gender-Based Outcome Discrepancies in Patients Who Underwent Alcohol Septal Ablation or Septal Myectomy for Hypertrophic Obstructive Cardiomyopathy: A Systematic Review and Meta-Analysis

Journal

AMERICAN JOURNAL OF CARDIOLOGY
Volume 208, Issue -, Pages 134-142

Publisher

EXCERPTA MEDICA INC-ELSEVIER SCIENCE INC
DOI: 10.1016/j.amjcard.2023.09.033

Keywords

alcohol septal ablation; hypertrophic cardiomyopathy; septal myectomy; gender

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This study found that in patients undergoing alcohol septal ablation or septal myectomy, female patients tend to be older at the time of intervention and have a higher risk of mortality, a higher incidence of atrioventricular block, a higher likelihood of permanent pacemaker requirement, and a longer hospital stay.
Clinical evidence and emerging studies suggest that the clinical heterogeneity observed in hypertrophic cardiomyopathy could be because of gender-based differences. We aimed to explore the gender-related differences pertaining to the treatment outcomes after alcohol septal ablation (ASA) and septal myectomy (SM). We searched PUBMED/MEDLINE, EMBASE, and SCOPUS to identify studies that report gender-stratified comparison of outcomes. The primary outcome of interest was short-term (within 30 days) mortality. A total of 15 studies totaling 31,907 patients (47% men and 53% women) were included. Women were found to be significantly older at the time of intervention (ASA: mean difference [MD] 7.55 years; SM: MD 4.41). In the ASA and SM treatment arms, women had a significantly higher risk of short-term all-cause mortality (ASA: risk ratio 0.48, 95% confidence interval 0.32 to 0.71, p = 0.0003; SM: risk ratio 0.63, 95% confidence interval 0.44 to 0.90, p = 0.01), more frequent permanent pacemaker implantation (ASA; p = 0.002, SM: p = 0.05), and longer in-hospital stay (ASA: MD 1.00 days, SM: MD 0.69). Among those who underwent ASA, women had a significantly higher rate of atrioventricular block. In conclusion, regardless of ASA or SM, women consistently presented at an older age and exhibited a higher risk-increased mortality rate, a greater incidence of atrioventricular block, and a higher likelihood of permanent pacemaker requirement-and longer hospital stay among women than men. This strongly emphasizes the need for a gender-specific approach to optimize care and improve treatment outcomes in hypertrophic cardiomyopathy.(c) 2023 Elsevier Inc. All rights reserved. (Am J Cardiol 2023;208:134-142)

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