Value of echo-Doppler derived pulmonary vascular resistance, net-atrioventricular compliance and tricuspid annular velocity in determining exercise capacity in patients with mitral stenosis

Eui Young Choi, Jaemin Shim, Sung Ai Kim, Young Shim Chi, Se Jung Yoon, Seok Min Kang, Donghoon Choi, Jong Won Ha, Se Joong Rim, Yangsoo Jang, Namsik Chung

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Background: The present study sought to determine if echo-Doppler-derived pulmonary vascular resistance (PVRecho), net-atrioventricular compliance (Cn) and tricuspid peak systolic annular velocity (Sa), as parameters of right ventricular function, have value in predicting exercise capacity in patients with mitral stenosis (MS). Methods and Results: Thirty-two patients with moderate or severe MS without left ventricular systolic dysfunction were studied. After comprehensive echo-Doppler measurements, including PVRecho, tricuspid Sa and left-sided Cn, supine bicycle exercise echo and concomitant respiratory gas analysis were performed. Measurements during 5 cardiac cycles representing the mean heart rate were averaged. Increment of resting PVRecho (r=-0.416, p=0.018) and decrement of resting Sa (r=0.433, p=0.013) and Cn (r=0.469, p=0.007) were significantly associated with decrease in %V̇O 2 peak. The predictive accuracy for %V̇O2 peak could increase by combining these parameters as Sa/PVRecho (r=0.500, p=0.004) or Cn·(Sa/PVRecho) (r=0.572, p=0.001) independent of mitral valve area, mean diastolic pressure gradients or presence of atrial fibrillation. Conclusions: Measurement of PVRecho, Cn and Sa might provide important information about the exercise capacity of patients with MS.

Original languageEnglish
Pages (from-to)1721-1727
Number of pages7
JournalCirculation Journal
Volume71
Issue number11
DOIs
Publication statusPublished - 2007 Dec 17

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

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