Need resource for MD orders guidelines please

Hello educators,

I have run into a problem with nurses crossing out MD orders that have been changed or discontinued at a LTC facility.

For example an order written on the MD order sheet reads "6/15/10 Tylenol 650 mg po Q 6 hours prn for mild pain Dr. Knowitall" If the MD writes new order "6/25/10 DC previous Tylenol order. Tylenol 325 mg po Q 6 hours prn for mild pain Dr. Knowitall" the nurses are crossing out the order on 6/15/10 on the MD order sheet and writing DC'd next to it.

I hope that was a clear example. I tried to tell the DON that the order on the MAR needs to be crossed out and re-written but never the order on the MD order sheet. She thinks that this practice is OK.

I have been looking for some kind of book or article that would give concrete proof that this is poor nursing practice so that I can pass it along to the DON. Does anyone have a resource or reference that I could use to help improve the nurses practice with MD orders?

Thanks in advance for any assistance.