Lisa, a 29-year-old woman, is diagnosed with a subdural hematoma and is on an IV drip of mannitol at 50 mL/hr. Why is it crucial to maintain this slow infusion rate?
To avoid fluid overload.
To prevent mannitol crystallization.
To avoid hyperglycemia.
To maintain electrolyte balance.
Grace, 67: Chronic sinusitis not responding to medications
The Correct Answer is B
A. Mannitol is an osmotic diuretic used to reduce intracranial pressure. While maintaining an appropriate infusion rate helps prevent fluid overload, it's not the primary reason for the slow infusion rate.
B. Mannitol can crystallize at lower temperatures or higher concentrations, leading to occlusion of the IV line. Maintaining a slow infusion rate reduces the risk of crystallization.
C. Mannitol itself does not typically cause hyperglycemia. Its primary concern regarding infusion is related to crystallization rather than glucose metabolism.
D. Mannitol's impact on electrolyte balance is more related to its osmotic diuretic effect rather than the infusion rate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Anti-dandruff shampoo is ineffective against head lice or nits.
B. The best way to prevent the spread of pediculosis is to avoid sharing personal items that come in contact with the hair, such as headgear, combs, brushes, hats, scarves.
C. While it's important to inform others about the presence of pediculosis, preventing its spread through sharing of personal items like headgear is more immediate.
D. Shaving the head may temporarily remove the nits, but it may also damage the skin and expose it to more infections.
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Correct Answer is C
Explanation
A. Tonsillitis typically presents with sore throat, difficulty swallowing, and inflamed tonsils, but it does not involve ear pain or tympanic membrane abnormalities.
B. Laryngitis presents with hoarseness or loss of voice due to inflammation of the larynx, not ear pain or tympanic membrane abnormalities.
C. Acute otitis media commonly presents with ear pain, dull tympanic membrane, and may be preceded by an upper respiratory tract infection. Tender, enlarged postauricular lymph nodes can also be present.
D. Allergic rhinitis typically presents with nasal congestion, sneezing, and itchy, watery eyes, but not with ear pain or tympanic membrane abnormalities.
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