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

Answer and Explanation

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

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Correct Answer is B

Explanation

Extended release potassium chloride tablets should be taken whole to avoid rapid release of the potassium which may lead to hyperkalemia and GI irritation.

A. Diuretic therapy increases urine output through reduction of water reabsorption. Potassium supplementation does not interfere with its action.

C. Taking potassium chloride with food or after meals is recommended to reduce the risk of gastrointestinal irritation or discomfort.

D. Antacids interfere with the absorption of potassium chloride leading to inadequate supplementation.

A. “I’ll be glad when I can stop taking this medicine” B. “I will notify my doctor before taking any other medications” C. "I have made an appointment to see my dentist next week." D. "1 know that I cannot switch brands of this medication."

Correct Answer is A

Explanation

Phenytoin is a lifelong medication for clients presenting with unprovoked seizures. The statement shows that the client has not understood their current management plan or is in denial and requires further counselling to promote adherence.

B.Notifying the doctor before taking any other medication is important as certain drug interactions can lead to toxicity of inadequate blood levels of phenytoin.

C.This is correct as it shows understanding that phenytoin can cause oral adverse effects such as gingival hyperplasia

D.Shows understanding that some drug preparations could have incipient that may cause adverse effects that the originally tolerated agent

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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?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is providing teaching for a client who is on diuretic therapy and has a new prescription for potassium chloride (KCL) 20 mEq extended release PO daily. Which of the following instructions should the nurse provide about the new prescription?

Correct Answer is B

Explanation

A nurse is performing discharge teaching for a client who has seizures and a new prescription for phenytoin. Which of the following statements by the client indicates a need for further teaching?

Correct Answer is A

Explanation

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