The nurse is caring for a client with atrial fibrillation who receives a prescription for warfarin. The international normalized ratio (INR) is 2.8. Which action should the nurse take?
Give the next scheduled dose.
Obtain another blood sample.
Monitor for signs of bleeding.
Notify the healthcare provider.
The Correct Answer is D
Choice A reason: Giving the next scheduled dose without further assessment is not advisable. An INR of 2.8 is within the therapeutic range for many conditions treated with warfarin, but it is important to ensure that the INR is stable and not trending higher, which could increase the risk of bleeding.
Choice B reason: Obtaining another blood sample might be necessary if there is suspicion of an error or if the INR is unexpectedly high or low. However, in this scenario, the INR is within the therapeutic range, so this action is not immediately necessary.
Choice C reason: Monitoring for signs of bleeding is always important for clients on warfarin, but it does not address the immediate need to communicate with the healthcare provider about the current INR level and any potential adjustments to the medication.
Choice D reason: Notifying the healthcare provider is the most appropriate action. The healthcare provider needs to be aware of the current INR level to make any necessary adjustments to the warfarin dosage and to provide further instructions on monitoring and follow-up.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Potassium levels are not directly affected by calcium acetate. Calcium acetate is primarily used to manage hyperphosphatemia in patients with CKD by binding to dietary phosphate and preventing its absorption1. Therefore, a decrease in potassium levels would not indicate the effectiveness of calcium acetate.
Choice B reason: Calcium acetate can actually increase calcium levels in the blood, especially if taken in high doses or if the patient has other sources of calcium intake. Monitoring calcium levels is important to avoid hypercalcemia, but a decrease in calcium levels is not the desired effect of this medication.
Choice C reason: Calcium acetate is used to reduce serum phosphate levels in patients with CKD. It works by binding to dietary phosphate in the gastrointestinal tract, forming insoluble calcium phosphate, which is then excreted in the stool. A decrease in serum phosphate levels indicates that the medication is effectively reducing phosphate absorption and managing hyperphosphatemia.
Choice D reason: The pH level of the blood is not directly influenced by calcium acetate. While maintaining acid-base balance is important in CKD management, the primary goal of calcium acetate therapy is to control phosphate level. Therefore, changes in blood pH are not a measure of the medication’s effectiveness.
Correct Answer is A
Explanation
Choice A reason: Withholding the scheduled dose and notifying the healthcare provider is the correct action because the client’s heart rate is significantly low at 48 beats per minute. Labetalol, a beta-blocker, can further reduce the heart rate, potentially leading to bradycardia or other cardiac complications. It is crucial to inform the healthcare provider to reassess the medication regimen and ensure the client’s safety.
Choice B reason: Administering the dose and monitoring the client’s blood pressure regularly is not advisable in this scenario. Although monitoring blood pressure is important, the primary concern here is the client’s low heart rate. Administering labetalol could exacerbate bradycardia, leading to severe complications.
Choice C reason: Assessing for orthostatic hypotension before administering the dose is a good practice but not the most critical action in this situation. The client’s low heart rate poses a more immediate risk than orthostatic hypotension. Therefore, withholding the medication and notifying the healthcare provider is a higher priority.
Choice D reason: Applying a telemetry monitor before administering the dose is useful for continuous cardiac monitoring, but it does not address the immediate concern of the client’s low heart rate. The priority should be to withhold the medication and consult the healthcare provider to prevent potential bradycardia.
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