Correct Answer: C

Rationale: When starting therapy with Lisinopril, a client should be instructed to monitor for a persistent dry cough as an adverse effect. Lisinopril, an ACE inhibitor, commonly causes this cough as an adverse effect. It is important for the client to monitor for this symptom and notify their healthcare provider if it occurs. Choices A, B, and D are incorrect because tinnitus, diarrhea, and weight gain are not commonly associated adverse effects of Lisinopril.

Correct Answer: B

Rationale: The correct answer is B: Neurotoxicity. Vincristine is known to cause neurotoxicity as an adverse effect due to its impact on the nervous system. Monitoring for symptoms such as peripheral neuropathy, muscle weakness, and tingling sensations is crucial. Choices A, C, and D are incorrect because hyperkalemia, neutropenia, and bradycardia are not typically associated with vincristine therapy.

Correct Answer: C

Rationale: The correct instruction for a client with a new prescription for Furosemide is to change positions slowly. Furosemide is a diuretic that can lead to orthostatic hypotension, causing dizziness and increasing the risk of falls. By advising the client to change positions slowly, the nurse helps prevent these potential adverse effects. Choices A, B, and D are incorrect. Taking Furosemide at bedtime (Choice A) is not necessary as it can be taken at any time of the day. Avoiding foods high in potassium (Choice B) is more relevant for clients taking potassium-sparing diuretics. Taking Furosemide with meals (Choice D) may lead to increased diuretic effects and frequent urination.

Correct Answer: C

Rationale: The correct answer is C: 'Brush and floss your teeth regularly.' Phenytoin can cause gingival hyperplasia, a condition that leads to overgrowth of gum tissue. Good oral hygiene practices such as regular brushing and flossing can help prevent or minimize this side effect. In contrast, choices A, B, and D are not directly related to managing the side effects of Phenytoin. Taking the medication at bedtime (choice A) is not a specific instruction related to oral hygiene. Increasing calcium-rich foods intake (choice B) may be beneficial for bone health but is not directly related to preventing gingival hyperplasia. Avoiding foods high in potassium (choice D) is not a necessary instruction for a client taking Phenytoin.

Correct Answer: A

Rationale: Corrected Rationale: Lisinopril is an ACE inhibitor that can cause hyperkalemia by reducing potassium excretion through the kidneys. Monitoring serum potassium levels is crucial to detect hyperkalemia early and prevent adverse effects such as cardiac arrhythmias. Choices B, C, and D are incorrect because Lisinopril is not known to significantly impact sodium, calcium, or magnesium levels in the same way it affects potassium levels.