title: [Arrhythmia in unstable angina pectoris].
abstract: 79 ECGs, recorded during angina pectoris, from 52 patients were studied to determine the relations of arrhythmias and ST-segment changes and to evaluate the relationship between the prevalence of arrhythmias, the severity of coronary artery disease and left ventricular function. Arrhythmias were found in 22% of the ECGs (VPCs in 9, VT in 4, SVPCs in 3, sinus bradycardia in 1). Angina pectoris attacks accompanied by ST-segment elevation, ST-segment depression or unchanged ST-segment showed disturbances of rhythm in 47%, 24% and 0%. If coronary spasm without significant coronary stenoses was the cause for myocardial ischemia, arrhythmias appeared with 75% more often than in myocardial ischemia caused by organic stenoses (19%). Patients with disturbances of rhythm during spontaneous angina pectoris do not have anymore deterioration in left ventricular function than patients without arrhythmias.
mesh_terms: D000328:Adult; D000368:Aged; D000788:Angina Pectoris, Variant / Q000150:complications*; D001145:Arrhythmias, Cardiac / Q000150:complications*; D001794:Blood Pressure; D017023:Coronary Angiography; D003329:Coronary Vasospasm / Q000150:complications*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies
vernacular_title: Arrhythmien bei instabiler Angina pectoris.