[Intraoperative ischemic change demonstrated on lead V5 related to hemodynamic episodes as well as sites and degree of coronary vascular lesion].
Electrocardiographic (ECG) changes demonstrated on lead V5 were investigated regarding the effect of hemodynamic change as well as site and degree of the LAD stenosis. Results were summarized as follows. 1. Myocardial ischemic changes on lead V5 occurred in the patients with two or more stenosis on LAD when heart rate increased. 2. Total occlusion of LAD with collaterals from stenosed RCA showed ischemic change on hypotension due to partial perfusion of cardiopulmonary bypass. 3. Ischemic changes occurred in patients with spontaneous angina and non-transmural myocardial infarction when the pericardium was opened. 4. Induction of anesthesia with fentanyl and droperidol kept blood pressure lower, but with this method no ischemic change on lead V5 occurred before CPB.
Watanabe
S
S
Department of Anesthesiology, Kurume University School of Medicine.
Tsuda
H
H
Muteki
T
T
D000368:Aged; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000175:diagnosis*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008875:Middle Aged