[Answer] An 8mo infant is brought to the emergency department for evaluation of severe diarrhea and dehydration. On arrival to the emergency department the infant becomes unresponsive apneic and pulseless. You shout for help and start CPR. Another provider arrives at which point you switch to 2-rescuer CPR. The rhythm shown here is seen on the cardiac monitor. The infant is intubated and ventilated with with 100% oxygen. An IO line is established and a dose of epinephrine is given. While continuing high-quality CPR what do you do next?