A woman with hypothyroidism has been taking levothyroxine (Synthroid) for 5 years. She has just been prescribed warfarin (Coumadin). The nurse immediately calls the health care provider to review these orders and anticipates the physician will

Number 1 is correct.

Rationale: Levothyroxine enhances the effects of warfarin, which could place patients at a higher risk for bleeding. A nurse should anticipate that the physician would evaluate the clotting time of the client more frequently and adjust the medication accordingly