Final answer:
The nurse should monitor the client more frequently for bleeding complications when administering indomethacin, an NSAID, if the client is also taking warfarin, an anticoagulant.
Step-by-step explanation:
A nurse preparing to administer indomethacin to a client with acute pain should monitor the client more frequently if they are on warfarin. Indomethacin is a nonsteroidal anti-inflammatory drug (NSAID) that can increase the risk of bleeding. Warfarin is an anticoagulant that also increases bleeding risk. When these medications are used together, there is a compounded effect, leading to an increased risk of serious bleeding complications.
The nurse must frequently check the patient's coagulation status through blood tests, such as PT/INR, to monitor warfarin's effect and adjust the dose accordingly. The nurse should also watch for any signs of bleeding or bruising and report any abnormal findings to the physician immediately.