- order lab work.
- increase the dose of warfarin.
- discontinue the levothyroxine.
- decrease the dose of warfarin.
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