Any mid-level practitioner who is responsible for running codes in the postoperative cardiac surgery population knows that there are a lot of moving parts in these scenarios. There are a lot of people to keep track of, and a lot of jobs to do in a short amount of time. Practice and experience keep mistakes to a minimum which, hopefully, produces a positive outcome. Unfortunately, I have been in several code situations where, even though we did everything right, there was still a less than favorable outcome. What I'm referring to are situations where ACLS guidelines have been applied, but have failed. For example, you pushed a milligram of epinephrine in a code, and your patient’s blood pressure went to three hundred mmHg, requiring a return to the operating room for bleeding. Perhaps your staff was doing appropriate CPR, hard and fast just like they teach it, and a saphenous vein graft was ripped off the heart, or an aortic suture line ruptured. I've even seen CPR cause a patient’s sternum to cut into his ventricle and cause catastrophic bleeding.