An Rn missed a prophylactic heparin drip protocol that was supposed to be started after a patient's surgery which was the start of his shift. I noticed it at the start of my shift and discussed with the prior RN. The patient is fine but technically we are supposed to report errors like this in our database system. This eventually goes to the charge nurse who does an informal discussion with that RN asking what could have been done differently and then our unit is made aware in an update of reports though no name is given. So I don't normally write these reports unless there was potential serious harm to the patient because all nurse make mistakes. Sometimes I have a hard time determining what is serious if the patient wasn't injured. But to me it seemed serious not to start a heparin drip after a surgery and I feel like something like that could be missed again by other nurses since these protocols aren't scheduled like how medications have timed administration. But i feel like such a tattle tale especially when these same nurses have helped me with questions in the past. I feel like they'll be mad at me and not want to help me after I've "tattle taled." BUt at the same time I want to cover my butt and be a patient advocate and correct system issues. Thoughts?