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Sustained improvement in left ventricular diastolic function after alcohol septal ablation for hypertrophic

Davinder S Jassal1, Tomas G Neilan, Michael A Fifer

  • 1Cardiac Ultrasound Laboratory, Cardiology Division, Massachusetts General Hospital, Boston, MA 02114, USA.

European Heart Journal
|June 16, 2006
PubMed

Insights

Alcohol septal ablation (ASA) significantly improves diastolic function in patients with hypertrophic obstructive cardiomyopathy (HOCM). These positive effects on diastolic function are sustained for at least two years, enhancing overall functional status.

Area of Science:

  • Cardiology
  • Cardiac Physiology

Background:

  • Impaired diastolic function is a key feature of hypertrophic cardiomyopathy (HOCM).
  • Alcohol septal ablation (ASA) is used for medically refractory HOCM to reduce left ventricular (LV) outflow tract gradient.
  • The long-term effects of ASA on diastolic function remain largely unknown.

Purpose of the Study:

  • To evaluate the long-term impact of successful alcohol septal ablation (ASA) on left ventricular (LV) diastolic function in patients with hypertrophic obstructive cardiomyopathy (HOCM).

Main Methods:

  • Echocardiographic assessment of LV diastolic function was performed at baseline and at 1- and 2-year follow-ups.
  • Evaluated parameters included E-wave deceleration time, isovolumic relaxation time, early diastolic mitral lateral annular velocity (E'), mitral inflow propagation velocity (Vp), and related ratios.

Main Results:

  • Successful ASA led to significant reductions in LV outflow tract gradient, interventricular septal thickness, and left atrial volume.
  • Key diastolic function parameters, including E/E' and E/Vp, showed significant improvement at 1 year.
  • These improvements in diastolic function were sustained in patients with 2-year follow-up data.

Conclusions:

  • Successful alcohol septal ablation (ASA) in HOCM patients results in significant and lasting improvements in echocardiographic measures of diastolic function.
  • These sustained functional improvements likely contribute to the enhanced clinical status observed post-procedure.
Abstract

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