John, a 50-year-old male, just underwent a Trabeculectomy by Traditional Surgery. His diagnostic results indicated high intraocular pressure (IOP) and glaucoma. In the past, - John had a history of allergies to antibiotics. What nursing action is crucial for John's care following the Trabeculectomy?

Arrange for a follow-up appointment with a cardiologist.

Provide John with emotional support for his allergies.

Monitor John's dressing for excessive bleeding.

Administer antibiotics to prevent post-operative infection.

Answer and Explanation

The Correct Answer is C

A. This action is not directly related to John's eye surgery.

B.   Emotional support may be beneficial, but it's not the most crucial action post- Trabeculectomy.
C.   This is crucial post-operative care to ensure proper wound healing and prevent complications such as hemorrhage.
D.   While infection prevention is important, administering antibiotics specifically for John's past allergies without indication may not be appropriate.

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Correct Answer is B

Explanation

A. A CO2 level lower than 20 mm Hg can cause cerebral vasoconstriction and ischemia.

B. The target CO2 level for patients with closed head injury is 20 to 25 mm Hg, which corresponds to a mild hypocapnia that reduces intracranial pressure and improves cerebral blood flow.
C. A CO2 level lower than 20 mm Hg can cause cerebral vasoconstriction and ischemia.
D. A CO2 level higher than 25 mm Hg can increase intracranial pressure and worsen brain edema.

A. To avoid fluid overload. B. To prevent mannitol crystallization. C. To avoid hyperglycemia. D. To maintain electrolyte balance. E. Grace, 67: Chronic sinusitis not responding to medications

Correct Answer is B

Explanation

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.

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Naxlex Comprehensive Predictor Exams

Maria, 21, with a closed head injury is unconscious and on mechanical ventilation. Her ABG results show a CO2 level of 35 mm Hg. What should be the target CO2 level to optimize brain perfusion?

Correct Answer is B

Explanation

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?

Correct Answer is B

Explanation

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