Advanced Cardiovascular Life Support (ACLS) Practice Exam

Defibrillation for a shockable rhythm, such as ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT), should be attempted as soon as possible after high-quality chest compressions have been initiated for about 2 minutes. This approach is crucial because high-quality CPR helps maintain blood flow to vital organs, and delivering a shock promptly improves the chances of restoring a viable rhythm.

Once high-quality compressions are performed, the priority is to minimize any interruptions to CPR while preparing for and delivering the shock when indicated. After defibrillation, it is essential to resume CPR immediately to continue providing perfusion to the brain and other vital organs until a stable cardiac rhythm can be restored. This timing is reinforced in ACLS guidelines, emphasizing the need for rapid intervention following initial compressions rather than delaying the shock attempt.

The other choices outline intervals that do not align with the priority of immediate defibrillation in the context of ACLS protocol. Regular and prompt action following appropriate CPR leads to better outcomes in successful rhythm conversion.