Q. A 67-year-old man is brought into the emergency department after a witnessed episode of cardiac arrest in a casino. Emergency medical services personnel report that security staff on the scene were able to shock the patient out of ventricular fibrillation within 10 min using an automated external defibrillator. The patient is still unresponsive but has a pulse and is tachycardic (heart rate, 110-119 beats/min). What therapy has been reported in the past few years that can protect against ischemic brain injury?

A. Mild hypothermia

B. Amiodarone HCl (Cordarone, Pacerone)

C.  Lidocaine (Xylocaine) infusion

D.  Warmed IV fluids