A nurse is caring for a client who is receiving warfarin 5 mg PO daily. Which of the following laboratory values should the nurse check prior to administering the medication? (Select all that apply.)
BUN
Serum potassium
PT
Serum sodium
INR
Correct Answer : C,E
A. BUN: Blood urea nitrogen is a marker of renal function and is not directly affected by warfarin therapy. While renal function is important for overall medication safety, it does not guide warfarin dosing or anticoagulation monitoring.
B. Serum potassium: Potassium levels are important for cardiac and neuromuscular function but are not influenced by warfarin. Monitoring potassium is unrelated to evaluating the effectiveness or safety of warfarin therapy.
C. PT: Prothrombin time measures the extrinsic and common coagulation pathways, which are directly affected by warfarin. Checking PT before administration helps assess anticoagulation status and the risk of bleeding, allowing for appropriate dose adjustments.
D. Serum sodium: Sodium levels are critical for fluid balance and neurologic function but do not affect warfarin therapy or coagulation. Monitoring sodium is not necessary for safe administration of warfarin.
E. INR: International normalized ratio standardizes PT results to guide warfarin therapy safely. It provides a reliable measure of anticoagulation and bleeding risk, and checking INR before administering warfarin ensures the dose is appropriate for therapeutic anticoagulation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Serve meals with plastic utensils: Clients who have attempted suicide are at risk of self-harm. Using plastic utensils reduces the risk of injury from sharp objects and is an immediate safety intervention to prevent further attempts. This is a standard precaution in suicide precautions.
B. Assign another client to accompany the client to therapy sessions: Clients at risk for suicide should be supervised by staff, not other clients. Relying on peers does not ensure safety and may place both clients at risk, making this an inappropriate intervention.
C. Assign the client to a private room: While privacy can provide comfort, placing a high-risk client in a private room without adequate observation increases the risk of unnoticed self-harm. Clients at risk for suicide require close monitoring and a safe environment with staff visibility.
D. Check on the client every 4 hr: Suicide precautions require frequent observation, often continuous or at least every 15–30 minutes depending on risk level. Checking every 4 hours is insufficient and does not adequately ensure client safety.
Correct Answer is B
Explanation
A. Instruct the client to report the theft to the police: While reporting to law enforcement is an option, the client may feel intimidated or unsafe doing so, and immediate protection and assessment of the situation are more urgent. The nurse’s priority is ensuring safety and initiating appropriate protective services.
B. Report the possible abuse to adult protective services: Financial exploitation is a form of elder abuse. Nurses are mandated reporters and should notify adult protective services to investigate and intervene as needed. This ensures the client’s safety, prevents further exploitation, and connects them with resources for protection and support.
C. Ask the client if there is another family member they can call for financial help: While exploring support systems is important, relying on another family member without assessment may not address potential abuse and does not fulfill the nurse’s legal obligation to report suspected exploitation.
D. Restrict visitation for the client's family until discharge: Restricting visitation may limit contact temporarily, but it does not address the underlying abuse or ensure ongoing protection. Reporting to protective services provides a structured and legal mechanism for safeguarding the client.
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