A nurse in a provider's clinic is caring for a client who reports erectile dysfunction and requests a prescription for sildenafil. Which of the following medications currently prescribed for the client is a contraindication to taking sildenafil?
Metronidazole
Phenytoin
Isosorbide
Prednisone
The Correct Answer is C
Isosorbide is a nitrate vasodilator used to dilate coronary vessels to relieve angina. Sildenafil also dilates peripheral vessels reducing peripheral vascular resistance. Using the two drugs together may lead to lethal drop in blood pressure and shock.
A, B, and D are not contraindicated with Sildenafil as they do not have any significant drug interactions
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 B
Explanation
Allopurinol is a uric lowering agent that reduces the conversion on hypoxanthine to uric acid lowering its levels in blood. This prevents formation of uric acid crystals which are deposited in joints and tissues in gouty arthritis.
A. Spironolactone is a potassium sparing diuretic used in management of ascites, hypertension and heart failure
C. Zolpidem is a sedative-hypnotic agent used in management of sleep wake disorders
D. Alprazolam is a benzodiazepine used in management of anxiety disorders
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