title: Transient right bundle branch block and left anterior hemiblock during Prinzmetal's angina.
abstract: A case of transient right bundle branch block with left anterior hemiblock during Prinzmetal's angina is reported. Selective coronary arteriography revealed 90% narrowing on the proximal left anterior descending coronary artery; the left ventriculogram was normal. Transient ischemia of the proximal His-Purkinje system is the probable mechanism of this pattern.
mesh_terms: D000328:Adult; D000788:Angina Pectoris, Variant / Q000150:complications*; D003329:Coronary Vasospasm / Q000150:complications; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D008297:Male