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 C
Explanation
Montelukast is a leukotriene receptor antagonist used for the long-term control of asthma. Among the side effects, montelukast causes drowsiness and hence should be taken at night before bed to avoid interference with daily activities.
A. Montelukast is an oral preparation that does not require a spacer unlike inhalers such as salbutamol
B. Montelukast is used controller therapy rather than a reliever in acute asthmatic attack
D. Rinsing the mouth is relevant in the use of inhaled corticosteroids to prevent oral thrush but not montelukast.
Correct Answer is D
Explanation
corticosteroids such as prednisone are potent anti-inflammatory agents used in inflammatory conditions such as rheumatoid arthritis. This reduces the features of inflammation which include reduction of pain.
A. Prednisone reduces bone density
B. Prednisone lowers the body's immunity increasing the risk of infection
C. Prednisone increases risk of cardiovascular disease but does not directly interfere with peripheral blood
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