MRCP2-0211

A 68-year-old man is brought to the resuscitation area of the Emergency Department following an out of hospital cardiac arrest. The paramedics are performing CPR and have inserted a laryngeal mask airway for ventilation. They report that the patient is in asystole and have already given IV adrenaline. During the next rhythm check, you observe some P-waves on the monitor.

What is the most appropriate course of action?