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Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
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Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model

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Single-Centre Experience of Surgical Myectomy for Hypertrophic Obstructive Cardiomyopathy

Alexander V Afanasyev1, Alexander V Bogachev-Prokophiev1, Michail A Ovcharov1

  • 1Heart Valve Surgery Department, Meshalkin National Medical Research Center, Novosibirsk, Russian Federation.

Heart, Lung & Circulation
|August 21, 2019
PubMed

Insights

Septal myectomy is a safe and effective treatment for hypertrophic obstructive cardiomyopathy, showing low mortality and significant improvement in patient outcomes. Long-term survival rates are comparable to the general population.

Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Medical Research

Background:

  • Septal myectomy is the established gold standard for treating hypertrophic obstructive cardiomyopathy.
  • This study evaluates the outcomes of patients who underwent septal myectomy.

Purpose of the Study:

  • To assess the efficacy and safety of septal myectomy in patients with hypertrophic obstructive cardiomyopathy.
  • To analyze clinical and hemodynamic results, mortality rates, and long-term survival post-surgery.

Main Methods:

  • Prospective data collection from 345 hypertrophic cardiomyopathy patients over 7 years.
  • Analysis of pre-operative and post-operative hemodynamic data, clinical outcomes, and survival rates.
  • Inclusion of concomitant Cox-Maze IV procedures and prediction of atrial tachyarrhythmias.

Main Results:

  • Low operative mortality (1.7%) and significant reduction in left ventricular outflow tract gradients.
  • High rate of favorable functional outcomes (NYHA class I/II: 96.7%) at follow-up.
  • Comparable long-term survival (95.7%) to the general population; atrial tachyarrhythmia predicted by left atrial diameter.

Conclusions:

  • Septal myectomy at this center demonstrates low operative mortality and adverse event rates.
  • The procedure yields acceptable intermediate-term clinical and hemodynamic results for hypertrophic obstructive cardiomyopathy.
  • Septal myectomy offers a safe and effective treatment option with favorable long-term survival.
Abstract

Keywords:
Hypertrophic cardiomyopathyLeft ventricular outflow tract obstructionMyectomy

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