A nurse is preparing to administer an IV osmotic diuretic to a client with increased intracranial pressure (ICP). Which of the following should the nurse identify as the purpose of the medication?
To lower intracranial pressure by increasing urinary output.
To reduce cerebral blood flow.
To prevent the formation of cerebral edema.
To decrease brain oxygen consumption.
The Correct Answer is A
A. The primary purpose of administering an osmotic diuretic, such as mannitol, is to lower ICP by promoting diuresis, which results in increased urinary output and decreases fluid volume in the brain.
B. Osmotic diuretics do not specifically reduce cerebral blood flow; rather, they work by reducing fluid volume and thus intracranial pressure.
C. While osmotic diuretics can help manage edema, their primary role is not solely to prevent the formation of cerebral edema but to actively reduce existing pressure.
D. Osmotic diuretics do not directly decrease brain oxygen consumption; their main function is to create an osmotic gradient that pulls fluid from the brain to reduce ICP.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Elevated PTH levels lead to increased calcium reabsorption from bones and enhanced calcium absorption in the kidneys, which can result in hypercalcemia and increase the risk of renal calculi (kidney stones).
B. Irritability and anxiety are not directly associated with high PTH levels. They are more often linked to thyroid hormone imbalances.
C. Frequent diarrhea is not a common symptom of elevated PTH levels; instead, hypercalcemia can lead to constipation.
D. Tetany and muscle pain are more commonly associated with low calcium levels, such as in hypoparathyroidism, not elevated PTH.
Correct Answer is A
Explanation
A. Hypertension with bradycardia is characteristic of autonomic dysreflexia due to the exaggerated sympathetic response causing increased blood pressure while the body compensates with bradycardia.
B. Hypotension with tachycardia is not indicative of autonomic dysreflexia; instead, it suggests different underlying issues.
C. While hypertension can occur in autonomic dysreflexia, it is typically accompanied by bradycardia, not tachycardia.
D. Hypotension with bradycardia does not correlate with autonomic dysreflexia and suggests other health complications.
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