[Daub]

Glad you said this. I have delivered cpr twice: once to my lecturer at school, the other to a stranger in the street. Both times they died. The experience of seeing people freak out when they saw their loved one dying completely devastated me out. Still now the memories are painful.

I told my father, who worked in medicine. He recommended that unless there was a defibrillator nearby, I walk away next time I see someone having a heart attack.

[JshWright]

Just to be clear, a "heart attack" commonly refers to a myocardial infarction (part of the hear tis being deprived of blood, generally due to an obstruction in a coronary artery). Someone in the early stages of a heart attack will generally (but not always) experience chest pain/etc, anxiety, shortness of breath, etc.

A heart attack can lead to cardiac arrest, where the heart stops beating effectively and the patient loses consciousness. Cardiac arrest is the scenario you're talking about (where CPR is indicated)

[Daub]

Thanks for the clarification.