Correct Answer: B

Rationale: Spironolactone is a potassium-sparing diuretic that can cause hyperkalemia (elevated potassium levels). A potassium level of 5.2 mEq/L is elevated and should be reported to the provider for further evaluation and management to prevent potential complications.

Correct Answer: B

Rationale: Liver damage is a potential adverse effect of Atomoxetine. Manifestations of liver damage include jaundice, upper abdominal tenderness, darkening of urine, and elevated liver enzymes. Therefore, the nurse should closely monitor the child for these signs and symptoms while on this medication.

Correct Answer: B

Rationale: Ciprofloxacin should not be taken with dairy products due to the interference of calcium with medication absorption. To ensure optimal effectiveness, the client should be advised to take Ciprofloxacin 1 hour before or 2 hours after consuming dairy products.

Correct Answer: A

Rationale: The correct instruction for a client with a new prescription for Phenytoin is to brush and floss their teeth regularly. Phenytoin is known to cause gingival hyperplasia, a condition that affects the gums. By maintaining good oral hygiene practices such as regular brushing and flossing, the client can help minimize the risk of developing this side effect.

Correct Answer: D

Rationale: The correct answer is the 32-year-old man with essential hypertension. Individuals who did not receive two doses of the varicella vaccine earlier in life should be immunized. Essential hypertension is not a contraindication for the varicella vaccine. Administering the vaccine to pregnant women, individuals with severe neomycin allergies, or infants is contraindicated.