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 A
Explanation
Chewing sugarless gum or sucking on hard sour candies can help stimulate saliva production and alleviate the symptoms of dry mouth.
B. Dry mouth is a common side effect of diphenhydramine and can often be managed with simple interventions like chewing sugarless gum. Notifying the provider is not necessary
C. Placing a humidifier at the bedside may help with dry mouth indirectly by increasing moisture in the air, but it's not a direct solution for dry mouth caused by diphenhydramine.
D. Administering the medication with food is not specifically related to managing dry mouth caused by diphenhydramine.
Correct Answer is D
Explanation
Sucralfate is a medication used to treat gastric and duodenal ulcers by forming a protective coating over the ulcer site to prevent acid exposure. Taking it 1 hour before meals and bedtime ensures formation of a coat prior to production of acid during digestion or lying down.
A. Taking sucralfate "as needed" may lead to overdose as well as reduced effectiveness
B. There's no need to reduce fluid intake with sucralfate.
C. Sucralfate should not be taken with antacids, as they can interfere with its effectiveness by altering its pH-dependent mechanism of action. It's generally recommended to take sucralfate at least 30 minutes before or after taking antacids.
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