A nurse is caring for a client who develops a ventricular fibrillation rhythm. The client is unresponsive, pulseless, and apneic. Which of the following actions is the nurse's priority?

A. Defibrillation Defibrillation is the immediate life-saving intervention for V-fib. It must be done as soon as possible. B. Epinephrine administration Epinephrine is important but is secondary to immediate defibrillation in the cardiac arrest algorithm. C. Airway management Important, but circulation and defibrillation take precedence in V-fib. D. Amiodarone administration Used after defibrillation attempts and epinephrine if rhythm persists. Not the first priority.