Correct Answer: B

Rationale: The most important intervention for the nurse to implement is to schedule weekly home visits to draw hCG values. Monitoring hCG levels is crucial in detecting potential complications like choriocarcinoma following GTD evacuation. Teaching about home pregnancy tests (Choice A) may not be as immediate and critical as monitoring hCG levels. A 5-week follow-up appointment (Choice C) may be too delayed for close monitoring. Initiating chemotherapy (Choice D) without appropriate hCG monitoring and evaluation is not recommended as the first-line intervention.

Correct Answer: A

Rationale: The correct answer is A: Serum creatinine. Before a CT scan with contrast, the nurse should review the serum creatinine level. This is crucial in patients with CKD because contrast agents can potentially worsen kidney function and lead to contrast-induced nephropathy. Monitoring serum creatinine helps assess kidney function and determine the risk of complications. Choices B, C, and D are less relevant in this scenario. Blood urea nitrogen (BUN) is another marker of kidney function, but serum creatinine is a more specific indicator. Serum potassium levels are important in assessing electrolyte balance but are not directly related to the risk of contrast-induced nephropathy. Serum glucose levels are not typically a primary concern before a CT scan with contrast in a patient with CKD.

Correct Answer: B

Rationale: Monitoring blood pressure frequently is the highest priority intervention for a client diagnosed with pheochromocytoma. This rare tumor can lead to life-threatening hypertension due to catecholamine secretion. Evaluating neurological status and maintaining seizure precautions are important but are not the highest priority in this case. Recording urine output, though essential for overall assessment, is not the priority compared to monitoring blood pressure in a client with pheochromocytoma.

Correct Answer: D

Rationale: The correct answer is to notify the healthcare provider immediately (Option D). Blurred vision in a client on long-term steroid therapy can be a sign of serious conditions like cataracts or glaucoma, which need urgent medical evaluation and management. Instructing the client to use artificial tears (Option A) may help with dry eyes but does not address the underlying cause of blurred vision. Administering an ophthalmic antibiotic (Option B) is not indicated unless there is a specific infection present. Referring the client to an optometrist for an eye exam (Option C) may delay necessary medical intervention by the healthcare provider, who should be involved promptly in this situation.

Correct Answer: D

Rationale: Nasal flaring with sternal retractions indicates severe respiratory distress in a 1-year-old with bronchiolitis, requiring immediate intervention. Nasal flaring and sternal retractions are signs of increased work of breathing and decreased air movement, indicating the child is struggling to breathe. Wheezing on expiration (Choice A) is common in bronchiolitis but may not require immediate intervention. An oxygen saturation of 90% (Choice B) is low but may not be the most critical finding in this case. A respiratory rate of 40 breaths per minute (Choice C) is elevated but alone may not indicate the need for immediate intervention as much as nasal flaring and sternal retractions.