title: Transient left posterior hemiblock. Report of four cases induced by exercise test.
mesh_terms: D000328:Adult; D000680:Amyl Nitrite / Q000494:pharmacology; D001285:Atropine / Q000494:pharmacology; D002037:Bundle-Branch Block / Q000209:etiology*; D017023:Coronary Angiography; D003327:Coronary Disease / Q000175:diagnosis; D004562:Electrocardiography; D005080:Exercise Test / Q000009:adverse effects*; D006329:Heart Conduction System / Q000503:physiopathology; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications; D013431:Sulfates / Q000494:pharmacology
chemical_list: D013431:Sulfates; D001285:Atropine; D000680:Amyl Nitrite