Exactly. It takes over a minute for permanent brain damage from a lack of oxygen, and it can take several, several minutes before actual death.
CPR started anytime within that range will help keep the person alive, as you are literally forcing their body to intake oxygen and pump the blood.
If you find someone without a heart beat and they aren’t already cold then call 911 and start cpr
retrieval4558@mander.xyz 2 days ago
Yes in fact I teach it and do it regularly. Out of hospital cardiac arrest survival rates are atrocious even when the person performing CPR is properly trained, let alone a panicked person trying to look up instructions on YouTube.