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CME: long-term outcome in asymptomatic patients with severe aortic regurgitation, normal left ventricular ejection

Roxana Enache1, Francesco Antonini-Canterin, Rita Piazza

  • 1Cardiology ARC, S. Maria degli Angeli Hospital, Via Montereale 24, Pordenone, Italy.

Echocardiography (Mount Kisco, N.Y.)
|June 25, 2010
PubMed

Insights

Severe left ventricular dilatation in asymptomatic severe aortic regurgitation patients does not impact outcomes. Close monitoring may allow delayed surgery, challenging current guidelines for intervention.

Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Echocardiography

Background:

  • Current guidelines suggest surgery for asymptomatic severe aortic regurgitation (AR) with severe left ventricular (LV) dilatation.
  • Optimal management for these patients remains debated, particularly regarding the impact of baseline LV dilatation.

Purpose of the Study:

  • To evaluate the influence of severe LV dilatation on LV remodeling and clinical outcomes in asymptomatic patients with severe AR and normal LV function.

Main Methods:

  • Retrospective analysis of 84 asymptomatic severe AR patients with normal LV ejection fraction (EF) and at least two echocardiograms.
  • Severe LV dilatation defined by LV end-diastolic diameter >70 mm, LV end-systolic diameter >50 mm, or indexed LV end-systolic diameter >25 mm/m².
  • Composite endpoint included symptom onset or LV dysfunction; follow-up averaged 7.1 years.

Main Results:

  • No significant difference in LV dilatation/hypertrophy progression or final LVEF between patients with and without baseline severe LV dilatation.
  • Similar rates of reaching the composite endpoint (symptoms or LV dysfunction) in both groups (P=0.59).
  • Vasodilators did not alter LV remodeling; surgical outcomes were comparable regardless of baseline dilatation.

Conclusions:

  • Baseline severe LV dilatation does not appear to influence LV remodeling progression or clinical outcomes in asymptomatic severe AR patients.
  • These findings suggest that conservative management with close follow-up may be a viable option to defer surgery in this population.
Abstract

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