very good. still the odds are against him.
we had a recent save in our area.....healthy man hit in chest with a baseball......it was an awesome save. shocked him and he just woke up on the scene. very impressive. he went into the ER to get checked out, but he was fine.
There's a microsecond during the heartbeat where a person is vulnerable from a blow to the heart. Scary.
Sounds like you’re mixing up CPR and AED.