Resuscitation
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Chest compressions before initial defibrillation attempts have been shown to increase successful defibrillation. This animal study was designed to assess whether ventricular fibrillation mean frequency after 90 s of basic life support cardiopulmonary resuscitation (CPR) may be used as an indicator of coronary perfusion and mean arterial pressure during CPR. ⋯ In this porcine laboratory model, 90 s and 3 min of CPR improved ventricular fibrillation mean frequency, which correlated positively with coronary perfusion pressure, and mean arterial pressure.