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 D
Explanation
Ciprofloxacin is a fluoroquinolone antibiotic that is associated with tendon rupture and tendonitis especially involving the Achilles tendon. Informing the client to report any tendon pain ensure that any complication is addressed and the medications stopped if need be.
A. ciprofloxacin causes diplopia and blurred vision but does not cause photophobia hence no need for sunglasses
B. The client should increase hydration as organism in UTI can predispose to urolithiasis
C. Antacids containing aluminum, magnesium, or calcium can interfere with the absorption of ciprofloxacin, reducing its effectiveness. They should be taken at least 2 hours before or 6 hours after taking the medication.
Correct Answer is D
Explanation
Status asthmaticus is an acute, life threatening exacerbation of asthma causes by bronchospasm on exposure to a trigger. Status asthmaticus can lead to respiratory failure. Short acting beta 2 agonists bind to beta 2 receptors on the airway epithelium causing bronchodilation and promotes air flow. They are used as first line due to their short onset of action.
A. Administering an inhaled glucocorticoid is used for long term control of inflammation in asthma but has no role in acute attacks
B. Identification of triggers is important but not a priority in status asthmaticus.
C. Obtaining a peak flow reading is useful but not a priority.
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