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 A

Explanation

Cyclosporine is an immunosuppressant medication that is often used following organ transplant to prevent rejection. Grapefruit juice can increase the absorption of cyclosporine, leading to an increased risk of side eﬀects and toxicity. Therefore, clients taking cyclosporine should be advised to avoid grapefruit and grapefruit juice while taking this medication. Pepperoni and smoked salmon do not have any known interactions with cyclosporine. Orange juice may also interact with cyclosporine, but not to the same extent as grapefruit juice. It is generally recommended that clients taking cyclosporine avoid drinking large amounts of orange juice and to inform their healthcare provider if they experience any adverse eﬀects.

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

A nurse is caring for a client who is to start taking cyclosporine following a kidney transplant. The nurse should instruct the client that which of the following foods can have an adverse interaction with this medication?

Correct Answer is A

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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