• I Ferreira, M Schutte, E Oosterloo, W Dekker, B W Mooi, J H E Dambrink, and A W J van 't Hof.
• Department of Cardiology, Isala Clinics, Zwolle, the Netherlands.
• Neth Heart J. 2009 Oct 1;17(10):378-84.

AbstractPurpose. Therapeutic mild hypothermia (TMH) is indicated for comatose survivors of an out-ofhospital cardiac arrest (OHCA) to improve general outcome. Although widely used, there are not many reports on its use on a critical care unit (CCU) or on the comparison of cooling methods.Methods. In a retrospective analysis covering January 2005 to December 2006, 75 consecutive comatose subjects post-OHCA due to ventricular fibrillation and nonventricular fibrillation rhythms (asystole/pulseless electrical activity) were studied in a single tertiary PCI centre. Subjects treated with conventional post-resuscitation care without TMH served as controls (n=26; Jan 2005-Sep 2005). Outcome from controls at hospital discharge was compared with subjects treated with TMH (n=49; Oct 2005-Dec 2006). During the study period, TMH was induced by either external (n=25; Oct 2005-Feb 2006) or endovascular (n=24; Mar 2006-Dec 2006) approach.Results. Besides more females in the control group, there were no major differences in baseline characteristics present between all groups. TMH improved survival (OR 0.36 [0.13-0.95], p<0.05) and neurological outcome (OR 0.23 [0.07-0.70], p<0.01). After subanalysis, TMH-improved outcome did not differ between the two cooling methods used. However, the times to reach TMH and normothermia were shorter with the endovascular approach.Conclusion. TMH induced on a CCU improves survival and neurological outcome after post-OHCA coma. TMH by endovascular approach was more feasible compared with external cooling, but the two cooling methods did not result in a different outcome. (Neth Heart J 2009;17:378-84.).

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