A nurse is caring for a client who has heart failure and a new prescription for furosemide. Which of the following laboratory values should the nurse review before administering furosemide?

Potassium

Phosphate

Carbon dioxide

Bicarbonate

Answer and Explanation

The Correct Answer is A

Furosemide is a loop diuretic that blocks water reabsorption in the loop of Henle promoting diuresis. It also causes potassium loss in urine leading to hypokalemia. Checking potassium levels before administration of furosemide prevents worsening already existing hypokalemia.

B, C, D- furosemide does not affect the blood levels of phosphate, Carbon dioxide and bicarbonate.

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Correct Answer is C

Explanation

St. John's wort is a form of alternative form of medicine used for psychiatric illnesses such as depression and other mood disorders. It increases metabolism of estrogen and progesterone reducing the effectiveness of hormonal contraceptives which can lead to unplanned pregnancies.

A, B, D have no effect of oral contraceptives.

A. Bradycardia B. Seizures C. Constipation D. Hypothermia

Correct Answer is C

Explanation

Mydriatic eye drops are used in ophthalmology to dilate the pupil for visualization of the retina and the vitreous humor. Absorption into the system an lead to systemic anticholinergic effect such a s constipation due to reduce gastrointestinal motility.

A. Bradycardia is a cholinergic effect

B and D are not typical anticholinergic effects

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A nurse is caring for a client who has heart failure and a new prescription for furosemide. Which of the following laboratory values should the nurse review before administering furosemide?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Explanation

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Correct Answer is C

Explanation

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