Hyperventilation-induced ST Segment Elevation Mimicking Acute Myocardial Infarction in a Comatose Patient With Tracheostomy

Int J Cardiol. 2011 Jun 2;149(2):e47-e49. doi: 10.1016/j.ijcard.2009.03.095. Epub 2009 Apr 23.


Controlled hyperventilation leading to respiratory alkalosis may induce coronary artery spasm. This manoeuvre is currently used in the diagnosis of Prinzmetal's angina. We describe the case of a comatose patient with tracheostomy in whom hyperventilation, caused by excessive bronchial secretion resulting in partial obstruction of the tracheal cannula, was followed by ST segment elevation mimicking acute myocardial infarction.

Publication types

  • Case Reports

MeSH terms

  • Coma / complications
  • Coma / physiopathology*
  • Coronary Vasospasm / diagnosis
  • Coronary Vasospasm / physiopathology*
  • Electrocardiography
  • Humans
  • Hyperventilation / complications
  • Hyperventilation / physiopathology*
  • Male
  • Middle Aged
  • Myocardial Infarction / diagnosis
  • Myocardial Infarction / physiopathology*
  • Tracheostomy*