There are protocols, chains of command, and "scopes of practice" for a reason. Too many times, I have seen residents attempt procedures in emergencies that they have studied and seen performed multiple times yet they mess up and have serious complications. It is not my place to step outside of my scope of practice, to risk my license and a law suit to attempt to save someone who may have possibly died anyway. Critical thinking and training will allow you to anticipate the next move but patients are not guinea pigs, even if they are dying. Unfortunately, we cannot save every patient.