A study evaluated the effectiveness of tourniquet assisted CPR in a porcine model (Figure).
Thumper Cardiopulmonary Resuscitation was performed subsequent to inducing cardiac arrest in 10 animals; a control group of 5 underwent an unassisted CPR, while an Esmarch exsanguination tourniquet was placed on the limbs of 5 additional animals during resuscitation.
Results show that although no significant difference was found in defibrillation, doses of epinephrine or CPR duration in both groups, tourniquet-treated pigs presented significantly higher coronary perfusion pressure, End-tidal CO2 and cerebral blood flow.
These data demonstrate the effect of increased venous return and systemic vascular resistance on vital organ perfusion: the heart (CPP), the tissues (ETCO2) and the brain (CBF) all presently increased perfusion, just as expected with HemaShock®.
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