Correct Answer: C

Rationale: The correct answer is C. An elevated serum creatinine level can indicate impaired kidney function, which is crucial to report before administering enalapril. Enalapril, an ACE inhibitor, can affect kidney function, especially in patients with pre-existing renal impairment. Choices A, B, and D are within normal ranges and do not directly impact the initiation of enalapril therapy.

Correct Answer: B

Rationale: The correct answer is B. Phenytoin can decrease the effectiveness of oral contraceptives, so it is important to inform the client about this interaction. Using an additional form of contraception, such as a backup method, is recommended to ensure adequate protection against pregnancy. Choice A is incorrect because it lacks specificity about the decrease in effectiveness of oral contraceptives caused by phenytoin. Choice C is incorrect as it suggests stopping phenytoin use while using oral contraceptives, which is not the appropriate action. Choice D is incorrect as phenytoin is known to decrease, not increase, the effectiveness of oral contraceptives.

Correct Answer: C

Rationale: Furosemide can cause low potassium levels, and clients should be advised to rise slowly to prevent dizziness.

Correct Answer: B

Rationale: The correct answer is B: Red meat. Red meat is a good dietary source of heme iron, which is easily absorbed by the body and beneficial for individuals with iron-deficiency anemia. Oatmeal, bananas, and whole grains are not as rich in iron compared to red meat and may not provide sufficient amounts to help manage iron-deficiency anemia effectively.

Correct Answer: A

Rationale: Corrected Rationale: A persistent cough is a known adverse effect of enalapril, an ACE inhibitor. Enalapril can cause the accumulation of bradykinin, leading to a dry, persistent cough in some patients. Dry mouth (choice B) and urinary retention (choice C) are not typically associated with enalapril use. Insomnia (choice D) is also not a common adverse effect of enalapril. Therefore, the correct answer is A.