Fig. 1

Blood temperature. After a 15-min untreated ventricular fibrillation (VF) the animals were randomized to either normothermic (38 °C) or hypothermic (32–33 °C) extracorporeal cardiopulmonary resuscitation (E-CPR). A 30-min rewarming period (between dotted lines) started in the hypothermic group after 120 min of extracorporeal support. Blood temperature (mean, connecting line) was recorded every 30 s