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Multiple Choice

For a patient with pulseless ventricular tachycardia or ventricular fibrillation, what is the most appropriate immediate treatment?

When the rhythm is ventricular fibrillation or pulseless ventricular tachycardia, the heart is in a chaotic, non-perfusing state. The only immediate intervention that can potentially terminate this deadly arrhythmia and restore a perfusing rhythm is defibrillation—an unsynchronized electrical shock that depolarizes a critical mass of myocardium so the natural conduction system can reestablish coordinated activity. Vagal maneuvers, observation, and IV fluids do not address the underlying electrical chaos of a pulseless arrest and therefore are not appropriate as immediate treatments in this situation. In actual resuscitation, you start high-quality CPR right away and deliver the shock as soon as possible, then continue CPR and follow up with additional shocks as indicated.

When the rhythm is ventricular fibrillation or pulseless ventricular tachycardia, the heart is in a chaotic, non-perfusing state. The only immediate intervention that can potentially terminate this deadly arrhythmia and restore a perfusing rhythm is defibrillation—an unsynchronized electrical shock that depolarizes a critical mass of myocardium so the natural conduction system can reestablish coordinated activity.

Vagal maneuvers, observation, and IV fluids do not address the underlying electrical chaos of a pulseless arrest and therefore are not appropriate as immediate treatments in this situation. In actual resuscitation, you start high-quality CPR right away and deliver the shock as soon as possible, then continue CPR and follow up with additional shocks as indicated.