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J Am Soc Echocardiogr. 2008 Apr;21(4):355-60. Epub 2007 Jul 20.

Functional mitral regurgitation predicts prognosis independent of left ventricular systolic and diastolic indices in patients with ischemic heart disease.

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  • 1Division of Cardiology, Bell Land General Hospital, Sakai, Japan. hokura@fides.dti.ne.jp

Abstract

OBJECTIVE:

The purpose of this study was to investigate the prognostic impact of functional mitral regurgitation (FMR) and tissue Doppler-derived index of left ventricular filling pressure, E/E', on long-term clinical outcome in a broad spectrum of ischemic heart disease.

BACKGROUND:

FMR has been shown to predict prognosis in patients with myocardial infarction.

METHODS:

A total of 524 patients with ischemic heart disease were enrolled. Patients were categorized according to the presence (n = 58) or absence (n = 466) of severe FMR.

RESULTS:

Patients with severe FMR were significantly older. By echocardiography, ejection fraction was significantly lower (43.0% +/- 14.6% vs. 56.4% +/- 12.8%, P < .01) and E/E' was significantly higher (21.3 +/- 9.0 vs. 14.6 +/- 6.4, P < .01) in patients with FMR than without FMR. Event-free (death and congestive heart failure) survival was significantly lower in patients with FMR than in those without (log-rank P < .0001). By multivariate logistic regression analysis, E/E' greater than 15 (relative risk [RR] 3.49; 95% confidence interval [CI] 2.08-5.88, P < .0001), ejection fraction less than 50% (RR 3.33; 95% CI 1.96-5.64, P < .0001), and severe FMR (RR 2.34; 95% CI 1.22-2.48, P = .01) were independent echocardiographic predictors of cardiac events. In further analysis of 116 patients matched by a propensity score, severe FMR remained associated with reduced event-free survival (log-rank P = .004).

CONCLUSION:

FMR is a strong predictor of cardiac events independently of left ventricular systolic and diastolic indices in patients with ischemic heart disease.

[PubMed - indexed for MEDLINE]
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