Keywords: Acute myocardial infarction, acute MI, cardiac arrest, STEMI, hypothermia, therapeutic hypothermia (PubMed Search)
Though most people know that therapeutic hypothermia is indicated in resuscitated victims of cardiac arrest, is it safe if that cardiac arrest victim is also being treated for STEMI? Do you need to worry about increased bleeding complications in these patients that are receiving anticoagulants, lytics, PCI, or other standard "bleeding" medications? Are these patients at increased risk for hemodynamic instability with therapeutic hypothermia?
Recent studies have demonstrated that therapeutic hypothermia in acute MI patients receiving other standard treatments (i.e., anticoagulants, etc.) is SAFE: it is associated with no increase in bleeding complications (1), no increase in time to balloon inflation (2), and no increase in hemodynamic instability or malignant arrhythmias (3).
1. Schefold JC, et al. Mild therapeutic hypothermia after cardiac arrest and the risk of bleeding in patients with acute myocardial infarction. Int J Cardiol 2009;132:387-391.
2. Knafelj R, Radsel P, Ploj T, et al. Primary percutaneous coronary intervention and mild induced hypothermia in comatose survivors of ventricular fibrillation with ST-elevation acute myocardial infarction. Resuscitaiton 2007;74:227-234.
3. Wolfrum S, Pierau C, Radke PW, et al. Mild therapeutic hypothermia in patients after out-of-hospital cardiac arrest due to acute ST-segment elevation myocardial infarction undergoing immediate percutaneous coronary intervention. Crit Care Med 2008;36:1780-1786.