I know this an outlier, and not related to emotional hospice decisions, etc but my mother had a heart attack in her 60s and was flatlining after they were reviv

I know this an outlier, and not related to emotional hospice decisions, etc but my mother had a heart attack in her 60s and was flatlining after they were reviving from cooling? protocol at the hospital. The doctors used defribrillators multiple times while I and siblings were in the room. The head doctor turned to us with an annoyed tone saying "look this isn't ethical to continue" when we asked if they could do anything. He then agreed to give her an adrenaline? shot, then they packed up and everyone walked out to our confusion. She stabilized and survived, and is still here 12 years later. I appreciate what the doctors did for her, but I am very cynical about blindly trusting what overworked/numb medical workers tell us now though.