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
Mydriatic eye drops are used in ophthalmology to dilate the pupil for visualization of the retina and the vitreous humor. Absorption into the system an lead to systemic anticholinergic effect such a s constipation due to reduce gastrointestinal motility.
A. Bradycardia is a cholinergic effect
B and D are not typical anticholinergic effects
Correct Answer is A
Explanation
After a pneumonectomy, positioning the client on the nonoperative side helps maximize ventilation to the remaining lung and facilitates drainage of secretions. Placing the client on the nonoperative side allows for better perfusion and ventilation of the remaining lung, which can improve oxygenation and respiratory function.
B-sims position is used during insertion of suppository of a rectal exam
C -Semi-Fowler's position is used in clients with heart failure and pulmonary edema to promoted ventilation in the upper lungs
D-Prone position is used during surgical procedures involving the back in the operating room
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