1062 Transesophageal Doppler assessment of coronary blood flow in the diagnosis of main coronary artery stenoses

Abstract

tered successfully in 174 (99%), 163 (93%), 125 (71%) and 102 (58%) patients, respectively. LMCA, LDA, Cx and RCA stenosis >50% was revealed in 19 (11%), 83 (47%), 31 (18%) and 28 (16%) patients, respectively. In all stenotic PCA Vd was much higher than in the same PCA without stenosis (table). A highly significant correlation between the catheterization-derived stenosis percentage and Vd for the LMCA (r=0.67, p 50% was Vd in the LMCA >1.4 m/s (83% sensitivity and 96% specificity), in the LAD >0.9 m/s (38% and 92%), in the Cx >1.1 m/s (57% and 96%) and in the RCA >0.4 m/s (27% and 95%), respectively. Conclusion: Transesophageal Doppler assessment of peak diastolic coronary flow velocity in proximal coronary arteries allows us to reveal proximal stenosis >50% with a very high specifity.