A nurse is caring for a client who is prescribed warfarin therapy for an artificial heart valve. Which of the following laboratory values should the nurse monitor for a therapeutic effect of warfarin?
Activated partial thromboplastin time (APTT)
Bleeding time
Prothrombin time (PT)
Hemoglobin (Hgb)
The Correct Answer is C
warfarin inhibits vitamin K epoxide reductase interfering with the synthesis of vitamin K dependent clotting factors (II, VII, IX, and X). This prolongs the prothrombin time, expressed in the form of INR international normalized ratio. Monitoring of INR helps to ensure that the prescribed dosages are within the therapeutic levels without increasing the risk of bleeding. The target INR range is between 2.5 and 3.5.
A. Used to monitor heparin therapy
B, D- not used for monitoring
Nursing Test Bank
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Related Questions
Correct Answer is C
Explanation
Furosemide is a loop diuretic that blocks water reabsorption in the loop of Henle promoting diuresis. It also causes potassium loss in urine leading to hypokalemia. Checking potassium levels before administration of furosemide prevents worsening already existing hypokalemia.
Hypokalemia causes complications like cardiac dysrhythmias, muscle weakness, and fatigue. The nurse should monitor the client for signs and symptoms of hypokalemia and notify the provider appropriately
A, B, D- furosemide has no effect on cortisol, albumin and bicarbonate.
Correct Answer is B
Explanation
Beyond the expiration date drugs should be discarded as the efficacy and safety of the medication cannot be guaranteed. Using expired medication can lead to reduced effectiveness or even potential harm to the client.
A. Returning the medication to the pharmacy may not be feasible, as the medication is expired and should not be used. The proper course of action is to discard it.
C. Notifying the provider is unnecessary in this situation.
D. Using expired medication can compromise client safety and is not in accordance with best practice guidelines.
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