Figure 4.

The Ohio State University Wexner Medical Center in collaboration with the Columbus Division of Fire extracorporeal cardiopulmonary resuscitation (ECPR) protocol for to out-of-hospital cardiac arrest due to refractory ventricular tachycardia and/or ventricular fibrillation. BMI = body mass index; CPR = cardiopulmonary resuscitation; DNR = do not resuscitate; ETCO₂ = end-tidal carbon dioxide; IA = intra-arterial; IV = intravenous; PaO₂ = partial pressure of oxygen; PEA = pulseless electrical activity.