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."
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
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Casts in the urine are typically associated with kidney problems, such as glomerulonephritis or kidney infections, rather than biliary obstruction. Casts are formed from proteins or cells in the renal tubules and are not related to bile duct obstruction or cholelithiasis.
B. Dark, tarry stools are indicative of upper gastrointestinal bleeding and the presence of digested blood in the stool. This condition, known as melena, is not typically associated with obstruction of the common bile duct due to cholelithiasis.
C. Jaundice is a common and significant finding in cases of obstruction of the common bile duct due to cholelithiasis. When the bile duct is obstructed, bilirubin, which is a component of bile, accumulates in the bloodstream because it cannot be properly excreted into the intestine.
D. Pain from cholelithiasis (gallstones) typically occurs in the right upper quadrant, not the left. The right upper quadrant pain is often associated with gallbladder inflammation or bile duct obstruction.
Correct Answer is C
Explanation
A. Raw vegetables can be challenging for individuals with myasthenia gravis because they require significant chewing and can lead to fatigue of the jaw muscles. Additionally, raw vegetables can be difficult to swallow if there is significant weakness.
B. Granola bars can be hard and require extensive chewing. For a person with myasthenia gravis, the effort needed to chew and swallow these bars can lead to increased fatigue and difficulty managing meals.
C. Macaroni and cheese is a softer food that requires less chewing compared to raw vegetables or granola bars. It can be easier for individuals with myasthenia gravis to manage because it is soft and less likely to cause fatigue. Additionally, it can be enriched with nutrients and is easier to swallow, making it a more appropriate choice for a nutritional plan for someone with MG.
D. Dried fruit is typically tough and chewy, which can be difficult for someone with myasthenia gravis to handle. The chewing effort required can lead to muscle fatigue and discomfort.
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