A miotic medication has been prescribed for a client with acute angle-closure glaucoma. The client asks the nurse about the purpose of the medication. Which response should the nurse provide to the client?

"The medication will help block the neural impulses that are sent to the muscles in the eye."

"The medication will help dilate the pupil to allow drainage of fluid to occur."

"The medication causes the pupil to constrict, opening the angle where the iris meets the cornea."

"The medication pulls excess aqueous humor from the eye, into the bloodstream."

Answer and Explanation

The Correct Answer is C

A.   This statement is not accurate in the context of miotic medications. Miotic drugs do not work by blocking neural impulses to the muscles. Instead, they directly affect the eye's pupil size and fluid dynamics. This response does not correctly describe the action of miotic agents.
B.   This response is incorrect because miotic medications actually constrict the pupil, not dilate it. In acute angle-closure glaucoma, dilation of the pupil would worsen the condition by further blocking the drainage angle. Miotics are used to constrict the pupil, which helps open the angle between the iris and the cornea, thereby facilitating fluid drainage.

C.   Miotic medications cause the pupil to constrict (miosis), which helps in opening the narrow angle between the iris and the cornea. In acute angle-closure glaucoma, the angle is closed or narrow, preventing proper drainage of aqueous humor. By constricting the pupil, miotic medications can help to relieve this obstruction and allow better drainage of fluid, thereby reducing intraocular pressure.
D.   This statement is incorrect regarding the action of miotic medications. Miotic drugs do not pull aqueous humor into the bloodstream. Their primary effect is on the pupil's size and the angle of the eye to improve drainage. Medications that reduce aqueous humor production or increase its outflow, such as carbonic anhydrase inhibitors or prostaglandin analogs, are responsible for these actions

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Correct Answer is D

Explanation

A. Pink, frothy sputum is typically associated with left-sided heart failure and pulmonary edema. This occurs when fluid backs up into the lungs due to left-sided heart failure. Since the question pertains to right-sided heart failure, this statement is not consistent with that condition.

B. Feeling short of breath when lying flat is known as orthopnea and is more commonly associated with left-sided heart failure. It occurs due to fluid shifting into the lungs when supine, which aggravates pulmonary congestion. This statement is not consistent with right-sided heart failure.
C. Hearing fluid in the lungs typically indicates left-sided heart failure, where fluid backs up into the pulmonary circulation, causing pulmonary edema. This symptom is associated with left-sided heart failure rather than right-sided heart failure.
D. Swelling of the legs, also known as peripheral edema, is a hallmark of right-sided heart failure. This occurs because the right side of the heart is unable to effectively pump blood out to the lungs, leading to fluid accumulation in the systemic venous circulation and resulting in swelling in the lower extremities and sometimes the abdomen

A. Thirty seconds after administration, the facial weakness and ptosis will be relieved for approximately 5 minutes. B. After administration, the client will experience worsening facial weakness and ptosis. C. After administration of the medication, there will be no change in the status of the ptosis or facial weakness. D. The client will have elimination of symptoms lasting at least 24 hours after the administration of the medication.

Correct Answer is A

Explanation

This is the correct expected outcome if the test is positive for myasthenia gravis. Edrophonium works quickly to increase acetylcholine levels, leading to temporary improvement in muscle strength. In a patient with myasthenia gravis, administration of edrophonium typically results in a rapid improvement in symptoms like facial weakness and ptosis within 30 to 60 seconds, with the effects lasting for a few minutes. This brief improvement is indicative of a positive result for myasthenia gravis.
B.A Worsening symptoms after administration of edrophonium are not expected and could indicate an adverse reaction or incorrect diagnosis. In myasthenia gravis, edrophonium typically improves symptoms rather than worsening them.
C. No change in symptoms would be unexpected in the case of myasthenia gravis. If edrophonium is effective, there should be a noticeable improvement in symptoms. If there is no change, it might suggest a diagnosis other than myasthenia gravis or that the test is inconclusive.
D. This outcome is not expected. Edrophonium has a very short duration of action, typically relieving symptoms for only a few minutes. The effects do not last for 24 hours. A longer-lasting improvement might be observed with other treatments for myasthenia gravis, such as anticholinesterase medications like pyridostigmine, but not with edrophonium.

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A miotic medication has been prescribed for a client with acute angle-closure glaucoma. The client asks the nurse about the purpose of the medication. Which response should the nurse provide to the client?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is D

Explanation

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Correct Answer is A

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