Safety of dobutamine stress echocardiography. A 24 h Holter monitoring study

European Heart Journal
C ChauvelM Khireddine

Abstract

Dobutamine-atropine stress echocardiography is an efficient method in the evaluation of patients with coronary artery disease. However, because high-dose dobutamine is potentially arrhythmogenic, the safety of this stress modality has been questioned. We performed a 24 h Holter monitoring, before and immediately after this test, in 73 consecutive patients (60 men and 13 women), mean age 60 +/- 12 years. Twenty-eight patients had had a recent myocardial infarction, 25 had stable chronic angina, 10 chronic ischaemic cardiomyopathy and 10 idiopathic dilated cardiomyopathy. Dobutamine was progressively increased (5-40 micrograms.kg-1.min-1) and atropine was injected in 30 patients. Arrhythmias and ST-segment deviation before and after the stress test were evaluated. The mean peak dobutamine dose was 32 +/- 11 micrograms.kg-1.min-1. The heart rate at rest and at peak dose was, respectively, 69 +/- 16 and 110 +/- 28 beats.min-1. Side effects during the injection of dobutamine were mainly ventricular (n = 14) or atrial (n = 4) premature contractions. Three patients had non-sustained ventricular tachycardia and five had hypotension during the test. No sustained episode of supraventricular or ventricular tachycardia was observed during ...Continue Reading

Citations

Oct 29, 2005·The American Journal of Cardiology·David E CoxGretchen L Wells

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