Abstract
A 54-year-old man with severe left ventricular dysfunction due to dilated cardiomyopathy was referred to our hospital for symptomatic incessant sustained ventricular tachycardia (VT). After the administration of nifekalant hydrochloride, sustained VT was terminated. An alternate class III agent, sotalol, was also effective for the prevention of VT. However, one month after switching over nifekalant to sotalol, a short duration of ST elevation was documented in ECG monitoring at almost the same time for three consecutive days. ST elevation with chest discomfort disappeared since he began taking long-acting diltiazem. Coronary vasospasm may be induced by the non-selective beta-blocking properties of sotalol.
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