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Survival after alcohol septal ablation versus conservative therapy in obstructive hypertrophic cardiomyopathy

Yin-Jian Yang, Chao-Mei Fan1, Jin-Qing Yuan

  • 1Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. fancm2004@126.com.

Cardiology Journal
|June 24, 2015
PubMed

Insights

Alcohol septal ablation (ASA) significantly improves survival in patients with severe obstructive hypertrophic cardiomyopathy (HCM) compared to conservative therapy. ASA therapy is a favorable treatment option for drug-refractory obstructive HCM.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Heart Failure Management

Background:

  • Obstructive hypertrophic cardiomyopathy (HCM) poses significant survival challenges, particularly in drug-refractory cases.
  • The comparative survival benefit of alcohol septal ablation (ASA) versus conservative therapy for severe obstructive HCM is not well-established.

Purpose of the Study:

  • To compare the survival outcomes of patients with severe drug-refractory obstructive HCM undergoing alcohol septal ablation (ASA) versus those receiving conservative therapy.

Main Methods:

  • A cohort of 274 patients with severe drug-refractory obstructive HCM was analyzed.
  • 229 patients received ASA, while 45 were managed with conservative therapy.
  • The primary endpoint was a composite of all-cause mortality and aborted cardiac arrest, with a median follow-up of 4.3 years.

Main Results:

  • The primary endpoint occurred in 5.7% of the ASA group versus 17.8% of the conservative group.
  • Five- and 10-year survival rates free from the primary endpoint were significantly higher in the ASA group (94.5% and 93.0%) compared to the conservative group (78.3% and 72.2%).
  • ASA therapy (HR 0.22) and maximal septal thickness (HR 1.14) were independent predictors of the primary endpoint.

Conclusions:

  • Alcohol septal ablation demonstrates favorable survival outcomes in patients with severe drug-refractory obstructive HCM.
  • ASA therapy offers a survival advantage over conservative management for this patient population.
  • ASA appears to be an effective intervention for improving survival in obstructive HCM.
Abstract

Keywords:
alcohol septal ablationconservative therapymedical therapyobstructive hypertrophic cardiomyopathysurvival

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