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
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Taking the medication on an empty stomach is not necessary
B. Storing the medication at room temperature is correct to prevent degradation and reduced efficacy.
C. The duration of treatment with nystatin suspension varies depending on the severity of the infection as fungal infections require days to weeks to clear completely
D.After swishing, it's usually recommended to hold the medicine in the mouth for as long as possible before swallowing, to maximize its effectiveness
Correct Answer is A
Explanation
Furosemide decreases excretion of uric acid in the renal tubules. This leads to high levels of uric acid accumulating in the blood leading to hyperuricemia.
B-Furosemide causes hypocalcemia
C-No effect of on chloride or sodium levels in blood
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