When should an AED be used during a cardiac emergency?

Using an AED (Automated External Defibrillator) during a cardiac emergency is critical for increasing the chances of survival in cases of sudden cardiac arrest. The correct choice emphasizes the importance of deploying the AED as soon as it is available, while also ensuring that emergency assistance has been called.

The rationale for this approach is that time is a significant factor in the survival of an individual experiencing cardiac arrest. The sooner an AED can be applied, the sooner it can analyze the heart's rhythm and deliver a shock if necessary. This prompt action can restore a normal heart rhythm and significantly increase the likelihood of survival and a favorable recovery outcome.

In contrast, other options imply delaying the use of the AED until specific conditions are met, such as checking for a pulse or performing CPR for a set duration, which could waste precious minutes when immediate action is needed. Therefore, the emphasis on using the AED as soon as it becomes available, in conjunction with prompt emergency response, aligns with established emergency response protocols that prioritize rapid defibrillation in cardiac emergencies.