From my own experience some patients can live if we extended the CPR a little more than 20-30mins. are you with stopping it within this time?

NO,IT SHOULD BE CONTINUED TILL ABOUT AN HOUR.

I will stop the rescucitation once the 30mins have passed

I will stop CPR after 20 Minutes to give the patient the possible survival chance and to avoid brain damage

I WILL  STOPPING CPR AFTER - MINUTE IF THE TEMP BECOME LESS THAN PERCENT AND ALSO BRAIN INSULT WILL BE DON AFTER PROLONGED PERIOD OF FAILURE OF OXYGEN SUPPLY TO BRAIN