[The exercise test in cardiomyopathy].
The exercise test in 30 patients with hypertrophic (HCM) and 29 patients with dilatative cardiomoyopathy (DCM) showed a positive test with significant ST depression in half of each group. In 12 out of 30 patients with HCM and 7 out of 29 patients with DCM, exercise testing caused angina. Rhythm disturbances surprisingly did not occur in HCM but where unexpectedly frequent in DCM: in 4 cases exercise testing provoked frequent supraventricular premature beats, in 3 patients paroxysmal atrial fibrillation, and in 11 patients ventricular ectopic beats (Lown class II-IVb). Nine patients exhibited an exacerbation by at least one Lown class as compared with the electrocardiogram at rest. In patients with atypical angina pectoris and a pathological exercise test the possibility of cardiomyopathy - apart from coronary artery disease - should be increasingly considered. With provocation of arrhythmias the possibility of DCM should especially be borne in mind.
D002312:Cardiomyopathy, Hypertrophic / Q000175:diagnosis*; D003327:Coronary Disease / Q000175:diagnosis; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
Der Belastungstest bei Kardiomyopathie.