Abstract
We examined the prognostic value of stress echocardiography appropriateness criteria for evaluation of valvular heart disease in 100 consecutive patients. Of the studies, 49%, 36%, and 15% were classified as appropriate, uncertain, and inappropriate, respectively. Over a median of 12.6 months, 24 events (12 deaths and 12 heart failure admissions) occurred. The 12-month event-free survival was significantly reduced in patients with appropriate or uncertain studies compared with patients with inappropriate studies (p ¼ 0.04 and p ¼ 0.005, respectively). There was no survival difference between patients with an appropriate or uncertain indication (p ¼ 0.1). The only independent predictors of events were a positive stress echocardiogram (hazard ratio: 15.5, p < 0.0001) and left ventricular ejection fraction (hazard ratio: 0.95, p ¼ 0.02). The appropriateness criteria for evaluation of valvular heart disease provide the ability to differentiate between patients at high- (appropriate group) and low(inappropriate group) risk of cardiac events. Reclassification of the uncertain group may improve the differential value of these criteria.
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