[Studies of the configuration of QRS wave of ventricular arrhythmia in coronary spasm].
D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D003329:Coronary Vasospasm / Q000503:physiopathology*; D004562:Electrocardiography; D004874:Ergonovine / Q000031:analogs & derivatives; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
D004874:Ergonovine