alexa Assisted Ventilation During ‘Bystander’ CPR in a Swine Acute Myocardial Infarction Model Does Not Improve Outcome
Anesthesiology

Anesthesiology

Journal of Anesthesia & Clinical Research

Author(s): Robert A Berg, Karl B Kern, Ronald W Hilwig, Gordon A Ewy

Abstract Share this page

Background

Mouth-to-mouth rescue breathing is a barrier to the performance of bystander cardiopulmonary resuscitation (CPR). We evaluated the need for assisted ventilation during simulated single-rescuer bystander CPR in a swine myocardial infarction model of prehospital cardiac arrest.

Methods and Results

Steel cylinders were placed in the mid left anterior descending coronary arteries of 43 swine. Two minutes after ventricular fibrillation, animals were randomly assigned to 10 minutes of hand–bag-valve ventilation with 17% oxygen and 4% carbon dioxide plus chest compressions (CC+V), chest compressions only (CC), or no CPR (control group). Standard advanced life support was then provided. Animals successfully resuscitated received 1 hour of intensive care support and were observed for 24 hours. Five of 14 CC animals, 3 of 15 CC+V animals, and 1 of 14 controls survived for 24 hours (CC versus controls, P=.07). Myocardial oxygen delivery and consumption were greater among surviving animals than nonsurvivors but did not differ between CC and CC+V animals.
Conclusions

In this acute myocardial infarction model of prehospital single-rescuer bystander CPR, assisted ventilation did not improve outcome.  

This article was published in Circulation and referenced in Journal of Anesthesia & Clinical Research

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