Why would someone ask about core measures when interviewing a new grad anyway...it is not taught in school and is a federal government requirement for reimbursement and part of new hire training and used only in acute type care...eg..medicare reimbursement. Nursing homes don't use it at all. One should no the correct questions to ask a new grad which should pertain to team work and past skills. Sounds to me like an interview where applicants were ill at ease set them up for failure....do your homework next time.
Go to NANDA nursing diagnosis book, how about bowel obstruction, pancreatitis, or even an impaction where runny stool comes around the impaction making it appear to be diarrhea