Try ED thoracotomies...
http://en.wikipedia.org/wiki/Resuscitative_thoracotomy
The numbers are generous. The survival numbers at even the best centers are about 10%. Forget breaking 2-3 ribs. We are cracking the patient's chest in the ED. I've done 3 and assisted on 4 others. Had two survive to the ICU and one leave the hospital alive. Still nothing more gratifying than putting your hands on someone and saving a life, I'd say an order of magnitude higher when you stick your finger in their pulmonary artery to plug a bullet hole and get wheeled up to the OR while on top of the patient. Not a single one of those experiences were terrible. And while I would never wish ill on others, it is something that I look forward to on trauma call. I don't want people to get hurt, but I want to be there when they do.
Yes, I am jaded. When you constantly deal with death, it happens. A bad night, you might have 3-4 deaths on trauma call. CVICU? I lost 4-5 this week. To be honest, if it is the natural course a particular pathology, it really starts to not bother you. It can't. If it did, you couldn't function in that environment. Yes, the young kids or sudden unexpected deaths haunt you, but that is more than made up for by the rest of the experience. At least, for me it is. Not everyone is built the same or enjoys the same aspects of medicine.