Correct Answer: A

Rationale: The correct answer is A: Include potassium-rich foods. Diuretics can cause potassium loss, leading to hypokalemia. Including potassium-rich foods helps prevent this deficiency. Choice B is incorrect because fruits and fruit juices are often good sources of potassium. Choice C is incorrect as protein-rich foods do not specifically address potassium needs. Choice D is incorrect as dairy products are also good sources of potassium. Therefore, recommending potassium-rich foods is essential to prevent hypokalemia in clients taking diuretics.

Correct Answer: D

Rationale: The correct answer is D: Fever. Following splenectomy, patients are at risk for OPSI due to impaired immune response. Fever is a key symptom of infection and should alert the nurse to this possibility. Bruising around the operative site (A) is expected post-surgery. Pain (B) is common after surgery and may not specifically indicate OPSI. Irritability (C) is a vague symptom and not specific to OPSI. In summary, fever is the most concerning symptom as it can indicate an underlying infection in a postsplenectomy patient.

Correct Answer: B

Rationale: The correct answer is B: Health behavior. Evaluating the patient's demonstration of self-injection assesses their ability to perform a specific health-related action. This choice focuses on the patient's actions and behaviors related to their health, aligning with the scenario provided. Choice A: Health status is incorrect because it refers to the patient's current physical condition, not their ability to perform a specific health action. Choice C: Psychological self-control is incorrect as it pertains to the patient's ability to regulate their emotions and impulses, not their ability to self-administer injections. Choice D: Health service utilization is incorrect as it relates to the frequency and pattern of healthcare services used by the patient, not their ability to perform a specific health behavior.

Correct Answer: B

Rationale: The correct answer is B because maintaining the head of the bed at a 30-degree angle can cause the radioactive material to shift within the client's body, increasing the risk of radiation exposure. This position should be avoided to prevent displacement of the applicator. A: Strict bed rest is appropriate to minimize movement and dislodgement of the applicator, ensuring proper treatment delivery. C: Providing a bed bath does not pose a radiation hazard as long as proper precautions are taken. D: Checking the applicator's position every 4 hours is essential for monitoring and ensuring it remains in place to deliver the intended treatment.

Correct Answer: C

Rationale: The correct answer is C: Pulmonary artery obstructive pressure (PACP). The multilumen pulmonary artery catheter measures hemodynamic pressures in the heart. When the catheter tip enters small branches of the pulmonary artery, it can assess Central Venous Pressure (A), Pulmonary Artery Capillary Pressure (B), and Pulmonary Artery Wedge Pressure (D). Pulmonary artery obstructive pressure is not a standard hemodynamic measurement and is not assessed using this catheter. It is crucial to differentiate between the various pressures measured to accurately assess the patient's cardiac status.