Final answer:
The priority intervention for the RN is to stop the LPN/LVN immediately and discuss the possible consequences of his actions in a nonjudgmental manner.
Step-by-step explanation:
The priority intervention for the RN in this situation is to stop the LPN/LVN immediately and discuss the possible consequences of his actions in a nonjudgmental manner. The RN should address the issue of recording medication administration before entering the patient's room, which can lead to inaccurate documentation and potential errors in patient care. It is important for the RN to ensure that the LPN/LVN understands the importance of following proper medication administration protocols.