If viable is the term we are gonna' use to determine whether or not we initiate life saving care then I would submit that most CPR performed on a trauma patient is unsuccessful...should all EMT's..firefighters...ER techs...nurses...paramedics...etc stop responding and attempting to resuscitate anyone involved in trauma since it is EXTREMELY unlikey that CPR will fail? At least without electricity/drugs most CPR (medical and trauma) is wholly unsuccessful...

Slippery slope....
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