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.
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Correct Answer is C
Explanation
A. Diplopia is a concerning symptom but does not indicate immediate deterioration in neurological status like a change in GCS does.
B. Ataxia is also significant but is less acute than a drop in GCS score.
C. A change in the Glasgow Coma Scale score from 13 to 11 indicates a worsening level of consciousness and necessitates immediate reporting, as it may suggest increased intracranial pressure or other complications.
D. A decrease in heart rate from 76 to 69 bpm is not significant enough in the context of TBI to warrant immediate reporting, as it remains within a normal range.
Correct Answer is C
Explanation
A. Feeling fatigued is not indicative of a therapeutic response; rather, patients should experience increased energy levels with appropriate therapy.
B. Decreased thyroxine levels are not the primary goal of levothyroxine therapy, which aims to normalize thyroid hormone levels in the body.
C. Decreased thyroid-stimulating hormone (TSH) levels indicate that the body is responding well to levothyroxine, as TSH production decreases when thyroid hormone levels are adequate.
D. Bradycardia and hypotension are not desired effects of levothyroxine and indicate potential under-treatment or other issues rather than a therapeutic response.