Prognostic value of left atrial volume index in degenerative mitral stenosis

Idit Yedidya1,2, Steele C Butcher1,3, Jan Stassen1,4

  • 1Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2300 RC, Leiden, The Netherlands.

Insights

An enlarged left atrial volume index (LAVI) in degenerative mitral stenosis (DMS) patients is linked to higher mortality. This echocardiographic measure independently predicts prognosis in DMS, highlighting its clinical significance.

Area of Science:

  • Cardiology
  • Echocardiography
  • Clinical Prognostics

Background:

  • Degenerative mitral stenosis (DMS) carries a poor prognosis.
  • Mean transmitral gradient (TMG) correlates with outcomes, but other echocardiographic markers require investigation.
  • Left atrial volume index (LAVI) is a potential prognostic indicator in DMS.

Purpose of the Study:

  • To assess the prognostic value of left atrial volume index (LAVI) in patients with degenerative mitral stenosis (DMS).

Main Methods:

  • 155 patients with DMS were analyzed.
  • Patients were categorized by LAVI: normal (≤ 34 ml/m2) versus enlarged (> 34 ml/m2).
  • Outcomes were assessed over a median follow-up of 25 months.

Main Results:

  • Enlarged LAVI was associated with higher left ventricular mass index and increased prevalence of mitral regurgitation and severe aortic stenosis.
  • Patients with enlarged LAVI experienced significantly worse prognosis and higher all-cause mortality (p = 0.026).
  • In multivariable analysis, enlarged LAVI independently predicted all-cause mortality (HR 2.009, P = 0.038).

Conclusions:

  • An enlarged LAVI (> 34 ml/m2) is significantly associated with increased mortality in DMS patients.
  • LAVI emerged as the sole independent predictor of prognosis after adjusting for confounders.
  • LAVI is a valuable prognostic tool for patients with degenerative mitral stenosis.
Abstract

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