Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
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J Am Soc Echocardiogr · Jan 2019
Multicenter StudyThe Prognostic Value of Coronary Flow Velocity Reserve in Two Coronary Arteries During Vasodilator Stress Echocardiography.
Vasodilator stress echocardiography (SE) allows combined evaluation of regional wall motion and Doppler coronary flow velocity reserve (CFVR) of both the left anterior descending coronary artery (LAD) and the right coronary artery (RCA). The aim of this study was to prospectively assess the prognostic correlates of LAD and RCA CFVR on SE. ⋯ Ischemia on SE with high peak wall motion score index identifies a high-risk subset regardless of the underlying CFVR response. Absence of ischemia on SE is associated with intermediate risk, and LAD CFVR is essential to identify a truly low-risk subset. RCA CFVR is less useful than LAD CFVR but may have a role for further risk stratification in patients without ischemia and normal LAD CFVR.