Which action is the first option that should be taken in managing sudden cardiac arrest along with CPR?

• A. Early defibrillation
• B. Antibiotics
• C. Vasopressors
• D. Imaging

Answer: (A)

Early defibrillation is the best first action to take with CPR in sudden cardiac arrest when the rhythm is shockable. Ventricular fibrillation or pulseless ventricular tachycardia can be rapidly interrupted by a defibrillating shock, which can restore a viable heart rhythm. The sooner that shock is delivered, the greater the chance of return of spontaneous circulation and survival. While CPR maintains blood flow in the meantime, defibrillation directly addresses the underlying chaotic electrical activity.

The other options don’t treat the immediate problem. Antibiotics aren’t helpful during an arrest, imaging isn’t part of the initial resuscitation, and vasopressors are supportive but not the first action alongside CPR.