Coronary Arterial Spasm as a Cause of Exercise-Induced ST-Segment Elevation in Patients with Variant Angina

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Four patients with variant angina pectoris exhibited reproducible exercise-induced chest pain ST-segment elevation. Coronary arterial spasm was documented with arteriography during exerciseinduced ST-segment elevation (three patients) or after intravenous administration of ergonovine maleate (one patient). Our observations show that in patients with variant angina exercise can trigger coronary arterial spasm, thus inducing anginal pain ST-segment elevation.

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