AED Myths Busted: 7 Dangerous Misconceptions Corrected

Myth 1: "I could shock someone who doesn't need it"

False. An AED analyses the patient's heart rhythm before it will do anything. It only advises or delivers a shock when it detects a shockable rhythm such as ventricular fibrillation. It is physically impossible to shock a normal, healthy heart with an AED. This safety analysis is a regulatory requirement for every approved device, including all ZOLL AEDs.

Myth 2: "You need medical training to use an AED"

False. AEDs are specifically designed for untrained bystanders. Voice prompts and visual icons guide you through every step. ZOLL AEDs go further with Real CPR Help®, coaching your compressions in real time. Training builds confidence and speed, and our free training videos help, but the device will guide anyone. Our step-by-step guide is here: How to use an AED.

Myth 3: "CPR alone is enough"

False. CPR keeps blood moving but very rarely restarts a heart in ventricular fibrillation. Only defibrillation can restore a normal rhythm. The two work together: compressions buy time, the shock treats the cause. Survival drops 7 to 10% for every minute without defibrillation (ANZCOR guidelines). Learn more in Why CPR?

Myth 4: "Cardiac arrest only happens to old or unfit people"

False. Sudden cardiac arrest strikes people of every age and fitness level, including athletes and young people, often with no warning signs. Over 1,500 New Zealanders suffer cardiac arrest each year (NZ Heart Foundation). Our founder was a fit surfer in his prime when he arrested at Piha Beach. Read his story.

Myth 5: "I could be sued for using an AED on someone"

Practically false in New Zealand. New Zealand's ACC no-fault scheme removes almost all personal injury litigation risk, and no New Zealander has been successfully sued for making a good-faith attempt to help a cardiac arrest victim. We cover the legal position fully in Good Samaritan and liability protection. The real risk is doing nothing.

Myth 6: "AEDs are too expensive and complicated to maintain"

False, if you choose well. A quality AED self-tests automatically and only needs pads and batteries replaced at expiry. The ZOLL AED Plus uses off-the-shelf batteries with a 5 year life and 5 year pads, with no servicing contracts. Beware the reverse though: some cheap AEDs cost far more over ten years. See the hidden costs of cheap AEDs.

Myth 7: "The ambulance will get here in time"

Dangerously false. Defibrillation works best within three minutes of collapse. Even in cities, ambulance response typically takes longer than that, and in rural New Zealand it can take far longer. The only way to be shocked within three minutes is if an AED is already nearby. That is the entire case for public access defibrillation, and it is why AED placement matters.