Recently there was a resident w/a bs of 489. The agency nurse called the dr. but never received a call back. The sliding scale calls for give x amt of insulin and notify dr. The nurse called the DON and she told her to keep trying to reach the dr., recheck bs q 15 mins and document. Needless to say the dr. called back 4 hours later. He said he didn't realize he was on call. Has anyone had this similiar experience, and if so what steps were taken?