Which device is used to restore a normal heartbeat by delivering an electrical shock?

• A. Crash cart
• B. Suction unit
• C. Defibrillator
• D. Sphygmomanometer

Answer: (C)

Delivering a strong electrical shock to the heart to reset its rhythm is the function of a defibrillator. In life-threatening rhythms like ventricular fibrillation or pulseless ventricular tachycardia, the heart’s electrical activity is chaotic and cannot sustain an effective pump. A defibrillator delivers a controlled impulse that briefly depolarizes the heart muscle, allowing the natural pacemaker to reestablish a normal rhythm. You’ll encounter external or automated devices that deliver energy through chest pads or paddles. The other items aren’t defibrillators: a crash cart is a resuscitation supply cart, a suction unit clears secretions from the airway, and a sphygmomanometer measures blood pressure.