Correct Answer: A

Rationale: Limiting fluid intake is essential in managing patients with chronic kidney disease to prevent fluid overload, which can worsen kidney function. Increasing potassium intake is not recommended as patients with kidney disease often need to limit potassium. Providing a high-protein diet may put extra strain on the kidneys, so it is not ideal. Administering IV antibiotics is not a standard treatment for chronic kidney disease.

Correct Answer: D

Rationale: The correct method to teach a patient about self-administration of insulin is to use a 90-degree angle for injection. This angle ensures proper subcutaneous administration of insulin, which is essential for effective absorption. Injecting into the upper arm (Choice A) is not recommended for insulin administration. While rotating injection sites (Choice B) is important to prevent lipodystrophy, the angle of injection is crucial for proper insulin delivery. Using a 45-degree angle (Choice C) is more suitable for intramuscular injections, not for subcutaneous insulin injections.

Correct Answer: D

Rationale: The correct answer is D. Warfarin's effectiveness is reduced by high intake of vitamin K-rich foods, so increasing their intake would contradict the treatment plan. Choices A, B, and C are all appropriate statements for a client on warfarin therapy. Avoiding vitamin K-rich foods helps maintain the medication's effectiveness, avoiding aspirin reduces the risk of bleeding, and monitoring blood pressure is essential for overall health monitoring.

Correct Answer: A

Rationale: Administering oxygen is the initial step in managing a suspected pulmonary embolism. Oxygen therapy is crucial to improve oxygenation levels in the blood when there is a suspected blockage in the pulmonary artery. Administering anticoagulants, although important in the treatment of pulmonary embolism, is not the first step as ensuring adequate oxygen supply takes precedence. Repositioning the patient or administering IV fluids are not the primary interventions for a suspected pulmonary embolism and are not as essential as providing oxygen support.

Correct Answer: D

Rationale: The correct instruction for a client with DVT is to elevate the affected extremity when in bed. Elevation helps reduce swelling by promoting venous return. Limiting fluid intake could lead to dehydration and is not recommended. Massaging the affected extremity can dislodge a clot, leading to serious complications. Applying cold packs can cause vasoconstriction and should be avoided in DVT.