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 A
Explanation
The normal appearance of regular insulin should be clear and colorless. Cloudy appearance or presence of particles indicates that the insulin has precipitated and may not be effective.
B. NPH insulin should be gently rolled between the palms to mix it but not shaken as this can lead to foaming and inaccuracy of the dose.
C. Injecting air into regular insulin first is not necessary. This step is typically done when drawing up NPH insulin to prevent the formation of air bubbles in the vial.
D. Regular insulin should be drawn up first to prevent contamination with the intermediate acting form of insulin
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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