When should an AED be applied to a patient?

An AED, or Automated External Defibrillator, should be applied to a patient as soon as possible to maximize the chance of restoring a normal heart rhythm. The effectiveness of defibrillation decreases significantly with every minute that passes without intervention in cases of sudden cardiac arrest. Rapid application of the AED allows for earlier rhythm analysis and potential shock delivery if indicated, which is vital in increasing the likelihood of survival.

While checking for a pulse and establishing an airway are important components of basic life support, they should not delay the application of the AED. In many emergency situations, especially in adult patients who are unresponsive and not breathing normally, the immediate use of an AED is crucial while simultaneously performing high-quality CPR. Waiting for paramedics to arrive before applying the AED can result in critical delays, diminishing the patient's chances of recovery. Thus, immediate action by applying the AED is emphasized in emergency protocols.