Which cardiac arrhythmia requires immediate intervention?

Which cardiac arrhythmia requires immediate intervention?

• A. PAC
• B. Bradycardia
• C. Bigeminy
• D. Asystole

Answer: (D)

Asystole means there is no electrical activity and no pulse, so there is no cardiac output and perfusion stops immediately. This is a life-threatening emergency, and the priority is rapid resuscitation: start high-quality CPR right away, activate emergency response, and follow ACLS protocols (including early epinephrine and addressing reversible causes). Defibrillation isn’t useful because there’s no rhythm to shock. Other rhythms, like harmless premature beats or bradycardia with adequate perfusion, don’t inherently require immediate action in the same way, since they don’t reflect a complete cessation of circulation. The urgency with asystole comes from the absence of any cardiac activity that can sustain life.

Asystole means there is no electrical activity and no pulse, so there is no cardiac output and perfusion stops immediately. This is a life-threatening emergency, and the priority is rapid resuscitation: start high-quality CPR right away, activate emergency response, and follow ACLS protocols (including early epinephrine and addressing reversible causes). Defibrillation isn’t useful because there’s no rhythm to shock. Other rhythms, like harmless premature beats or bradycardia with adequate perfusion, don’t inherently require immediate action in the same way, since they don’t reflect a complete cessation of circulation. The urgency with asystole comes from the absence of any cardiac activity that can sustain life.