Correct Answer: D

Rationale: The correct answer is D. A sudden absence of pain in a client with severe abdominal pain may indicate a serious condition such as internal bleeding. This sudden change in pain status requires immediate assessment to rule out any life-threatening complications. Choices A, B, and C do not indicate an acute change in the client's condition that would necessitate immediate attention compared to sudden pain relief in a client with severe abdominal pain.

Correct Answer: B

Rationale: The correct instruction for the nurse to provide the client undergoing direct observation therapy for TB is to take medications in the presence of the nurse. This approach ensures that the client is actually taking the medications as prescribed, reducing the risk of noncompliance. Choice A is incorrect because the focus should be on ensuring the client physically takes the medications rather than discussing feelings. Choice C is incorrect as it does not ensure direct observation. Choice D is incorrect because self-reporting or keeping a record does not guarantee that the client is actually taking the medications.

Correct Answer: B

Rationale: During the IV infusion of vasopressin in a client with bleeding esophageal varices, the nurse should monitor for chest pain and dysrhythmia. Vasopressin is a vasoconstrictor that can cause cardiovascular effects, including chest pain and dysrhythmias. Options A, C, and D are incorrect as vasopressin is not expected to cause vasodilatation of the extremities, hypotension, tachycardia, or improvements in GI symptoms such as cramping and nausea.

Correct Answer: C

Rationale: In this scenario, the client needs to avoid weight-bearing on the left leg. A 4-point crutch gait involves using both crutches and both legs, making it more appropriate for weight-bearing restrictions. Encouraging the use of a 3-point gait (choice A) would not provide adequate support for the client's condition. While using a wheelchair (choice B) could be an option, instructing the client in a 4-point crutch gait would promote mobility while adhering to weight-bearing restrictions. A 2-point crutch gait (choice D) involves using both crutches and one leg, which is not suitable for avoiding weight-bearing on the left leg.

Correct Answer: B

Rationale: Pheochromocytoma is associated with severe hypertension due to excessive catecholamine release. Monitoring blood pressure frequently is the priority intervention to assess for hypertensive crises and prevent complications like stroke, heart attack, or organ damage. While recording urine output every hour, evaluating neurological status, and maintaining seizure precautions are important aspects of care, they are not the highest priority in a client with pheochromocytoma.