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 does the nurse expect the healthcare provider to advise?
1. Maintain the same daily dose of heparin.
2. Maintain the same daily dose of warfarin (Coumadin).
3. Increase the dose of warfarin (Coumadin) according to the previous instructions by the physician.
4. Stop taking the warfarin (Coumadin) until the next clinic appointment.
Correct Answer: 2
Prothrombin and INR tests are used to monitor the therapeutic effect of warfarin. Warfarin doses are adjusted to maintain the INR at 2.0?3.0; therefore, this patient should be told to maintain the same daily dose of medication. Heparin is monitored by the aPPT test.
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