What is the action of timolol maleate (Timoptic), a beta-adrenergic blocking agent?

Increases the outflow of aqueous humor.

Increases the production of aqueous humor.

Draws aqueous humor from the eye into the circulatory network.

Decreases the production of aqueous humor.

Answer and Explanation

The Correct Answer is D

Timolol maleate (Timoptic) is a beta-adrenergic blocking agent that reduces elevated intraocular pressure by decreasing the production of aqueous humour in the ciliary body of the eye.

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Correct Answer is C

Explanation

Sublingual and buccal medications are rapidly absorbed because they are placed under the tongue or between the cheek and gum, where they dissolve and are absorbed directly into the bloodstream through the mucous membranes in the mouth. This allows for rapid absorption and bypasses the liver’s first-pass metabolism.

A. Draw a peak level 90 min prior to administering the medication and a trough level 90 min after the dose. B. Draw a trough level immediately prior to administering the medication and a peak level 30 min after the C. dose. D. Draw a trough level at 0900 and a peak level at 2100.

Correct Answer is B

Explanation

To obtain an accurate gentamicin serum level, the nurse should draw a trough level immediately before administering the next dose of medication and a peak level 30 minutes after the dose has been administered. The trough level measures the lowest concentration of the medication in the blood, while the peak level measures the highest concentration.

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What is the action of timolol maleate (Timoptic), a beta-adrenergic blocking agent?

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Naxlex Comprehensive Predictor Exams

Why are sublingual and buccal medications rapidly absorbed?

Correct Answer is C

Explanation

A nurse is caring for a client who has an infection and a prescription for gentamicin Intermittent IV bolus every 8 hr. A peak and trough are required with the next dose. Which of the following actions should the nurse take to obtain an accurate gentamicin serum level?

Correct Answer is B

Explanation

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