The Nurse Calls a Patient at Home with the Laboratory

The nurse calls a patient at home with the laboratory results from his visit of earlier in the day. Based on a review of these results, what will the nurse advise this patient? 11ea992e_0a24_a348_9f38_8d8aed164d63

A) Maintain the same daily dose of heparin.
B) Maintain the same daily dose of warfarin (Coumadin) .
C) Increase the dose of warfarin according to the previous instructions by the physician.
D) Stop taking the warfarin until his next clinic appointment.