The Electrocardiographic Efects of Intravenous Veratrum Viride

Abstract
Previously unnoted T-wave inversions in the precordial leads resulting from the intravenous injection of veratrum viride are described. Evidence is presented that these changes are not caused either by the hypotensive action of the drug or by myocardial anoxia or by hypopotassemia. The T-wave inversions probably. result from vagal stimulation which cause altered ventricular repolarization.