A patient is having difficulty achieving adequate anticoagulation with prescribed doses of warfarin. What information should the nurse offer this patient?
1. "Some people metabolize medications differently because of their genetic makeup.".
2. "You are probably not taking the medication correctly.".
3. "There must be something you are eating that is interfering with the drug.".
4. "Something in your lifestyle is interfering with the action of the medication.".
1
Rationale 1: One use of genetic testing involves predicting or studying the patient's response to particular medications.
Rationale 2: There is no evidence that the patient is not taking the medication correctly.
Rationale 3: There could be a dietary component influencing action of warfarin, but this would be unlikely to result in a total inability to achieve adequate anticoagulation.
Rationale 4: An analysis of the patient's lifestyle will not help determine why successful anticoagulation has not been achieved.
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