Which rhythm with a pulse is commonly treated with synchronized cardioversion?

Which rhythm with a pulse is commonly treated with synchronized cardioversion?

• A. Unstable atrial fibrillation
• B. Ventricular fibrillation with no pulse
• C. Pulseless electrical activity
• D. Asystole

Answer: (A)

Synchronized cardioversion is used for tachyarrhythmias that still have a pulse but are unstable, because it can quickly interrupt the abnormal rhythm and restore normal rhythm without risking dangerous discharges. In unstable atrial fibrillation, the rapid, irregular conduction can compromise blood flow, so delivering a shock in sync with the QRS complex resets the electrical activity safely and aims for a stable rhythm. The other scenarios aren’t treated with synchronized cardioversion: ventricular fibrillation with no pulse requires unsynchronized defibrillation and immediate CPR; pulseless electrical activity and asystole are non-shockable and managed with CPR and medications rather than a synchronized shock.

Synchronized cardioversion is used for tachyarrhythmias that still have a pulse but are unstable, because it can quickly interrupt the abnormal rhythm and restore normal rhythm without risking dangerous discharges. In unstable atrial fibrillation, the rapid, irregular conduction can compromise blood flow, so delivering a shock in sync with the QRS complex resets the electrical activity safely and aims for a stable rhythm.

The other scenarios aren’t treated with synchronized cardioversion: ventricular fibrillation with no pulse requires unsynchronized defibrillation and immediate CPR; pulseless electrical activity and asystole are non-shockable and managed with CPR and medications rather than a synchronized shock.