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: B

Rationale: The correct answer is B: Have the client wear sequential compression devices (SCDs). Following a cholecystectomy, the client is at risk for venous thromboembolism (VTE) due to reduced mobility and surgical stress. SCDs help prevent VTE by promoting venous return and reducing the risk of blood clots. Choices A, C, and D are incorrect. While deep breathing and coughing exercises are essential postoperatively, SCDs take precedence in preventing VTE. Placing the client in a supine position with the head of the bed flat can increase the risk of respiratory complications. Encouraging ambulation is important, but SCDs are a higher priority in this situation to prevent VTE.

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.

Correct Answer: A

Rationale: Administering analgesics as prescribed is the appropriate intervention for managing perineal pain in a postpartum client. Analgesics help to alleviate discomfort and promote the client's recovery. Applying a warm compress (choice B) may provide some relief, but it does not address the pain as effectively as analgesics. Encouraging ambulation (choice C) and positioning the client with the head elevated (choice D) are not directly related to addressing perineal pain.

Correct Answer: C

Rationale: Hypotension is a common adverse effect of morphine due to its vasodilatory properties. It can lead to a drop in blood pressure, which should be closely monitored during administration. Diarrhea (Choice A) is not a typical adverse effect of morphine. Urinary retention (Choice B) is a side effect of morphine due to its impact on the bladder muscles, but it is not classified as an adverse effect. Bradycardia (Choice D) is not a common adverse effect of morphine; instead, it tends to cause tachycardia.