How long can one be dead before its to late to resuscitate?

The time window for successful resuscitation after cardiac arrest is generally considered to be around 4 to 6 minutes, as brain damage can begin to occur within this timeframe due to lack of oxygen. Beyond 10 minutes, the chances of survival and meaningful recovery decrease significantly. However, there are rare cases where individuals have been successfully revived after longer periods, particularly in cold water drowning scenariOS. Ultimately, prompt medical intervention is crucial for increasing the likelihood of a positive outcome.