Correct Answer: C

Rationale: A serum potassium level of 3.0 mEq/L should be monitored closely in a client who is postoperative following a thyroidectomy to detect any electrolyte imbalances. After a thyroidectomy, there is a risk of hypokalemia due to the effects of anesthesia, stress response, and the surgical procedure itself. Monitoring serum potassium levels is crucial as hypokalemia can lead to cardiac arrhythmias and muscle weakness. Serum calcium, sodium, and chloride levels are important but not the primary focus following a thyroidectomy, making them incorrect choices.

Correct Answer: B

Rationale: The correct answer is B. Excessive sleepiness and difficulty feeding can be signs of hypothyroidism in infants. Asking about the infant's sleepiness and feeding pattern is crucial in assessing for hypothyroidism.
Choice A is incorrect because immunizations are not directly related to hypothyroidism.
Choice C is about feeding method and not specific to hypothyroidism.
Choice D is unrelated as it asks about relatives with birth defects, which does not directly assess the infant's condition.

Correct Answer: B

Rationale: The statement 'I should take my antacids regularly, even if I don't have symptoms' indicates a misunderstanding. Antacids should only be taken when symptoms are present to neutralize excess stomach acid. Taking antacids regularly when not experiencing symptoms may lead to metabolic alkalosis.

Choices A, C, and D are correct statements for a client with peptic ulcer disease as they all focus on avoiding irritants that can exacerbate the condition.

Correct Answer: A

Rationale: A serum potassium level of 5.5 mEq/L is most concerning in a client receiving erythropoietin therapy as it indicates hyperkalemia, requiring immediate intervention. High potassium levels can lead to severe cardiac arrhythmias and must be addressed promptly. The other laboratory values, though abnormal, do not present immediate life-threatening risks as hyperkalemia does.

Correct Answer: A

Rationale: The correct answer is A: 'Elevated blood pressure must be anticipated and identified quickly.' Acute glomerulonephritis can lead to significant hypertension, making it crucial to monitor blood pressure frequently to promptly identify any elevation.
Choice B is incorrect because while monitoring can help assess medication effectiveness, the primary reason for frequent blood pressure checks in this case is to detect elevated blood pressure.
Choice C is incorrect as not all hospitalized children require such frequent blood pressure monitoring.
Choice D is incorrect as the primary reason for monitoring blood pressure is to detect hypertension, rather than solely focusing on potential kidney damage.