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Noninvasive Measurement of Left Coronary Blood Flow Reserve by Transthoracic Doppler Echocardiography
Author(s) -
KURIKI SATOSHI,
NASU MASATAKA,
FUKAMI KENICHI,
HIRAMORI KATSUHIKO
Publication year - 1999
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.1999.tb00103.x
Subject(s) - medicine , cardiology , coronary flow reserve , dipyridamole , blood flow , coronary artery disease , doppler echocardiography , diastole , doppler effect , atrial fibrillation , artery , hemodynamics , blood pressure , physics , astronomy
The development of new ultrasound instrumentation has made epicardial coronary artery blood flow imaging easier with the use of transthoracic coronary Doppler echocardiography (TCDE). This study was performed to investigate the accuracy of coronary blood flow reserve (CFR) measurement by TCDE. In 15 patients with ischemic heart disease in the absence of valvular disease or atrial fibrillation, coronary flow at rest and flow with hyperemia induced by intravenous dipyridamole infusion were recorded by TCDE and Doppler guidewire ultrasonography. The CFR was determined as the ratio of the maximum hyperemic diastolic time‐averaged peak velocity to the velocity at rest in the proximal or distal left anterior descending coronary artery. It was found that the CFR of the left anterior descending coronary artery measured by TCDE was comparable in accuracy with CFR measured by invasive methods (r = 0.87, P < 0.0001, n = 15).