You are caring for an 8-month-old with bradycardia and very poor perfusion that has persisted despite effective ventilations with high-flow oxygen. You should begin chest compressions if the heart rate is: More than 200/min More than 150/min Less than 100/min Less than 60/min {Ans: Less than 60/min}You arrive on the scene of a 12-year-old child who suddenly collapsed on the playground. The child is unresponsive, apneic, and pulseless and CPR is in progress. A lay rescuer just brought the school AED, turned it on, and attached it. The AED recommends a shock. Which of the following should be done next? Obtain intravenous access Attempt defibrillation Change compressions:ventilations from 30:2 to 15:2 Attempt endotracheal intubation {Ans: Attempt defibrillation}Which of the following is likely to be the most helpful technique to identify potentially reversible metabolic and toxic causes during the attempted resuscitation of a young child in cardiac arrest? Soliciting a history from the caregiver or family Obtaining a urine sample for toxicology screen Obtaining chest and abdominal radiographs Obtaining a venous blood gas {Ans: Soliciting a history from the caregiver or family}You are caring for a 2-year-old unconscious patient who is intubated and receiving mechanical ventilation. The child's