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Intraoperative measurement of saphenous vein bypass graft flow with transesophageal echocardiography. 1993

Y Niimi, and S Morita, and K Kaya
Department of Anesthesiology, Juntendo University, School of Medicine, Tokyo, Japan.

The value of transesophageal echocardiography (TEE) for detecting saphenous vein coronary graft (SVG) flow was investigated. Thirty-five consecutive patients undergoing elective coronary artery bypass grafting (CABG) were studied intraoperatively. SVG flow characteristics obtained by TEE were compared with those gathered by an electromagnetic flowmeter (EMF). A total of 59 patent bypass grafts were examined. Pulsed-wave Doppler signals could be detected in 38/59 of the grafts studied (64.4%). The detection rate was the same for all types of grafts encountered (left anterior descending, right coronary, left circumflex, and lateral ventricular branches). The flow profiles obtained by TEE were very similar to those detected by EMF. Both profiles showed a bifid appearance with maximal flow in late diastole. The peak velocity seen in a SVG during diastole was 39.0 +/- 12.7 cm/sec. Graft volume determined by TEE correlated well with data obtained by EMF (r = 0.84). TEE is an attractive technique for noninvasively detecting phasic flow in SVGs; however, the flow detection rate is too low for the routine evaluation of graft patency.

UI MeSH Term Description Entries
D007387 Internal Mammary-Coronary Artery Anastomosis Direct myocardial revascularization in which the internal mammary artery is anastomosed to the right coronary artery, circumflex artery, or anterior descending coronary artery. The internal mammary artery is the most frequent choice, especially for a single graft, for coronary artery bypass surgery. Anastomosis, Internal Mammary-Coronary Artery,Coronary-Internal Mammary Artery Anastomosis,Internal Mammary Coronary Artery Anastomosis,Anastomosis, Internal Mammary Coronary Artery,Coronary Internal Mammary Artery Anastomosis
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D012039 Regional Blood Flow The flow of BLOOD through or around an organ or region of the body. Blood Flow, Regional,Blood Flows, Regional,Flow, Regional Blood,Flows, Regional Blood,Regional Blood Flows
D001783 Blood Flow Velocity A value equal to the total volume flow divided by the cross-sectional area of the vascular bed. Blood Flow Velocities,Flow Velocities, Blood,Flow Velocity, Blood,Velocities, Blood Flow,Velocity, Blood Flow
D003326 Coronary Circulation The circulation of blood through the CORONARY VESSELS of the HEART. Circulation, Coronary
D003331 Coronary Vessels The veins and arteries of the HEART. Coronary Arteries,Sinus Node Artery,Coronary Veins,Arteries, Coronary,Arteries, Sinus Node,Artery, Coronary,Artery, Sinus Node,Coronary Artery,Coronary Vein,Coronary Vessel,Sinus Node Arteries,Vein, Coronary,Veins, Coronary,Vessel, Coronary,Vessels, Coronary
D003971 Diastole Post-systolic relaxation of the HEART, especially the HEART VENTRICLES. Diastoles
D004452 Echocardiography Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues. The standard approach is transthoracic. Echocardiography, Contrast,Echocardiography, Cross-Sectional,Echocardiography, M-Mode,Echocardiography, Transthoracic,Echocardiography, Two-Dimensional,Transthoracic Echocardiography,2-D Echocardiography,2D Echocardiography,Contrast Echocardiography,Cross-Sectional Echocardiography,Echocardiography, 2-D,Echocardiography, 2D,M-Mode Echocardiography,Two-Dimensional Echocardiography,2 D Echocardiography,Cross Sectional Echocardiography,Echocardiography, 2 D,Echocardiography, Cross Sectional,Echocardiography, M Mode,Echocardiography, Two Dimensional,M Mode Echocardiography,Two Dimensional Echocardiography
D004947 Esophagus The muscular membranous segment between the PHARYNX and the STOMACH in the UPPER GASTROINTESTINAL TRACT.

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