FIGURE 9.15 Pediatric Cardiac Arrest Algorithm—2018 Update ABCs—A, airway, B, breathing, C, circulation; CPR, cardiopulmonary resuscitation; ETCO2 , end-tidal CO2 ; ETI, endotracheal intubation; IO, intraosseous; IV, intravenous; PEA, pulseless electrical activity; PTX, pneumothorax; ROSC, return of spontaneous circulation; VF, ventricular fibrillation; VT,