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 B
Explanation
A. Furosemide is a loop diuretic used to treat fluid overload by increasing urine output. In an Addisonian crisis, the primary issue is the severe lack of adrenal hormones rather than fluid overload. Administering furosemide is not indicated in this situation, as it does not address the underlying cause of the crisis or correct electrolyte imbalances that are common in Addisonian crisis.
B. This is a common intravenous fluid choice for managing Addisonian crisis. The 0.9% sodium chloride (normal saline) helps to restore blood volume and correct electrolyte imbalances, while the 5% dextrose provides glucose to support energy needs. This combination helps to address hypovolemia (low blood volume) and prevent hypoglycemia (low blood sugar), both of which can occur in an adrenal crisis.
C. Ketoconazole is an antifungal medication that can be used to treat Cushing’s syndrome, not Addisonian crisis. Insulin is used to manage blood glucose levels and would not be the primary treatment for Addisonian crisis. This option does not directly address the adrenal insufficiency or the immediate needs of an Addisonian crisis.
D. Addisonian crisis often presents with hyponatremia (low sodium) and hyperkalemia (high potassium) due to inadequate aldosterone production. Administering potassium chloride could exacerbate hyperkalemia, which is a concern in Addisonian crisis. Therefore, potassium chloride infusion is not appropriate and could worsen the electrolyte imbalance.
Correct Answer is ["20"]
Explanation
Desired dose / Available dose = Volume to administer 500 mg / (125 mg/5 mL) = Volume to administer Volume to administer = 20 mL
Therefore, the nurse should administer 20 mL of naproxen suspension per dose.
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