A patient has been discontinued from warfarin
(Coumadin) therapy for 3 weeks. Which laboratory test indicates that all effects of the warfarin have been eliminated?
a. International normalized ratio (INR) of 0.9
b. Red blood cell count of 5 million/mm3
c. Hemoglobin of 16 g/dL
d. Hematocrit of 42
Question 2
The aPTT of a patient who is prescribed continuous intravenous (IV) heparin is two times the control value. What is your best action?
a. Increase the IV rate as ordered.
b. Decrease the IV rate as ordered.
c. Leave the rate unchanged.
d. Stop the infusion and notify the prescriber.