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The aim of this study was to investigate hemodynamic effects and resuscitation outcomes of simultaneous sternothoracic cardiopulmonary resuscitation (SST-CPR) with a prototype of a motor-driven automatic device, comparing to manual standard CPR (S-CPR), in an animal model of ventricular fibrillation (VF). 20 male pigs were randomized to receive standard CPR (S-CPR group) or CPR with an automatic SST-CPR device (A-CPR group) after 5 minutes of VF. Five minutes of basic life support CPR was performed, followed by 10 minutes of advanced life support CPR. Hemodynamic variables including systolic blood pressure (SBP), diastolic blood pressure (DBP), coronary perfusion pressure (CPP), and end-tidal carbon dioxide tension (ETCO2), and resuscitation outcomes including rate of restoration of spontaneous circulation (ROSC) and 2-hour survival were compared between two groups. Ten animals among the A-CPR group and 8 animals among the S-CPR group were included in the final analysis. SBP was higher in the A-CPR group than in the S-CPR group during CPR (p = 0.046). The DBP, CPP and ETCO2 were not different between two groups (p = 0.412, 0.585, and 0.243, respectively). ROSC rate was 38% in the S-CPR group and 10% in the A-CPR group (p = 0.275). The 2-hour survival rate was 25% in the S-CPR group and 0% in the A-CPR group (p = 0.183). In a swine model of cardiac arrest, CPR with a prototype of a motor-driven automatic SST-CPR device, compared with standard CPR, produced higher systolic blood pressure, but there was no difference in diastolic pressure, coronary perfusion pressure, ROSC rate and 2-hour survival rate.

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Hemodynamic efficacy of a motor-driven automatic device performing simultaneous sternothoracic cardiopulmonary resuscitation compared to standard cardiopulmonary resuscitation in an animal model of cardiac arrest