An Automated External Defibrillator (AED) should be used when a person is unconscious, not responsive, and not breathing normally, typically during sudden cardiac arrest (SCA). Key indications include no pulse, unresponsiveness, and abnormal or no breathing. The AED analyzes the heart's rhythm and delivers an electric shock if needed to restore a normal heartbeat. It should be applied as soon as possible, ideally after about two minutes of CPR, to maximize the chances of survival. It is important to act quickly because every minute of delay in defibrillation reduces the chance of survival by approximately 10% in cases of ventricular fibrillation, a common shockable rhythm during cardiac arrest.
When to Use an AED
- Sudden collapse with unresponsiveness
- No normal breathing (agonal gasping is not normal breathing)
- No detectable pulse
- Symptoms of sudden cardiac arrest such as unconsciousness and unresponsiveness
When Not to Use an AED
- The person is conscious and breathing normally
- The victim has a Do Not Resuscitate (DNR) order
- AED is malfunctioning or has faulty parts
Additional Points
- Start CPR immediately and call emergency services
- Use AED as soon as available
- Follow AED voice prompts closely
- AEDs are designed for use by laypersons and require minimal training
This approach helps save lives by restoring an effective heart rhythm and maintaining circulation until advanced medical help arrives.
