• Stephan Schmidt-Schweda, Andreas Ohler, Heiner Post, and Burkert Pieske.
• Department of Cardiology and Pneumology, Heart Center Göttingen, Georg August University of Göttingen, Robert-Koch-Straße 40, 37075 Göttingen, Germany.
• Resuscitation. 2013 Mar 1;84(3):319-25.

Aim Of The StudyHypothermia exerts profound protection from neurological damage and death after resuscitation from circulatory arrest. Its application during concomitant cardiogenic shock has been discussed controversially, and still hypothermia is used with reserve when haemodynamic parameters are impaired. On the other hand hypothermia improves force development in isolated human myocardium. Thus, we hypothesized that hypothermia could beneficially affect cardiac function in patients during cardiogenic shock.Methods14 Patients, admitted to Intensive Care Unit for cardiogenic shock under inotropic support, were enrolled and moderate hypothermia (33 °C) was induced for either one (n=5, short-term) or twenty-four (n=9, mid-term) hours.Results12 patients suffered from ischaemic cardiomyopathy, 2 were female, and 6 were included after cardiac arrest and resuscitation. Body temperature was controlled by an intravascular cooling device. Short-term hypothermia consistently decreased heart rate, and increased stroke volume, cardiac index and cardiac power output. Metabolic and electrocardiographic parameters remained constant during cooling. Improved cardiac function persisted during mid-term hypothermia, but was reversed during re-warming. No severe or persistent adverse effects of hypothermia were observed.ConclusionModerate Hypothermia is safe and feasable in patients during cardiogenic shock. Moreover, hypothermia improved parameters of cardiac function, suggesting that hypothermia might be considered as a positive inotropic intervention rather than a risk for patients during cardiogenic shock.Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

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