Comparative effects of diltiazem, nifedipine, and verapamil on large and small coronary artery constriction induced by intracoronary acetylcholine in pigs.

Abstract

The in vivo protective effects of diltiazem, nifedipine, and verapamil on large and small coronary artery constriction induced by intracoronary injection of acetylcholine were compared by coronary arteriography in pigs. The percent narrowing of the epicardial major right coronary artery was used as an indicator of large coronary artery constriction, and the… (More)

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