A patient with atrial fibrillation is receiving warfarin [Coumadin]. The nurse notes that the patient's INR is 2.7 . Before giving the next dose of warfarin, the nurse will notify the provider and:
a. administer the dose as ordered.
b. request an order to decrease the dose.
c. request an order to give vitamin K (phy-tonadione).
d. request an order to increase the dose.
A
This patient has an INR in the appropriate range, which is 2 to 3 for most patients and 2.5 to 3.5 for some, so no change in warfarin dosing is necessary. It is not correct to request an order to ei-ther decrease or increase the dose of warfarin. It is not necessary to give vitamin K, which is an antidote for warfarin toxicity.
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