Correct Answer: A

Rationale: The correct answer is A: Creatinine. Gentamicin can cause nephrotoxicity, leading to impaired kidney function. Monitoring creatinine levels helps the nurse detect any potential kidney damage. Choice B, Aspartate aminotransferase (AST), is not typically affected by gentamicin. Choice C, White blood cell count, is not directly related to gentamicin adverse effects. Choice D, Serum glucose, is not specifically monitored for gentamicin adverse effects.

Correct Answer: C

Rationale: The correct instruction when taking alendronate is to remain upright for 30 minutes after administration. This helps prevent esophageal irritation, a known side effect of the medication. Option A is incorrect because alendronate should be taken in the morning on an empty stomach. Option B is incorrect as taking alendronate with food decreases its absorption. Option D is incorrect as alendronate should be swallowed whole with a full glass of water and not chewed.

Correct Answer: B

Rationale: Polyuria is the correct answer. Diabetes insipidus is characterized by the inability to concentrate urine, leading to excessive urination (polyuria) and thirst. Bradycardia (slow heart rate) is not typically associated with diabetes insipidus. While dehydration from the excessive urination can lead to hypotension rather than hypertension, and weight loss can occur due to fluid loss, the most specific and significant finding expected in diabetes insipidus is polyuria.

Correct Answer: B

Rationale: The correct answer is to change the TPN tubing every 24 hours. This action helps reduce the risk of infection because the high glucose content of TPN promotes bacterial growth. Choice A is incorrect as changing the tubing every 48 hours would not provide adequate infection prevention. Option C, monitoring urine output, is important for assessing renal function but is not directly related to preventing TPN-related infections. Option D, monitoring weight, is essential for assessing nutritional status but does not directly address infection prevention in TPN administration.

Correct Answer: B

Rationale: A weight loss of 0.5 kg (1.1 lb) in 24 hours may indicate dehydration or malnutrition, which are critical concerns for a client receiving total parenteral nutrition (TPN). Therefore, the nurse should report this finding to the provider. Elevated blood glucose levels (Choice A) can be managed by adjusting TPN components, WBC count (Choice C) and a slightly elevated temperature (Choice D) are not directly related to TPN administration and may not require immediate intervention.