Complete heart block with normal QRS duration occurring distal to the his bundle in acute inferior myocardial infarction.
A patient with acute inferior myocardial infarction developed on the second day complete heart block with normal QRS duration, and the block was found to be distal to the His bundle. To our knowledge, this is the first such documented case in the English literature. Failure of the preceding Wenckebach periods and of complete heart block to respond to intravenous atropine may be a clinical clue to the nature of this type of heart block. The implications and possible explanations are discussed in the light of recent knowledge concerning the nature of heart block in inferior wall myocardial infarction.
D000208:Acute Disease; D000368:Aged; D001285:Atropine / Q000627:therapeutic use; D002036:Bundle of His / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology* / Q000503:physiopathology; D006801:Humans; D009203:Myocardial Infarction / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D014672:Vectorcardiography
D001285:Atropine