Correct Answer: D

Rationale: The most important teaching point for a client prescribed methotrexate is to avoid direct sunlight to prevent photosensitivity. Methotrexate can make the skin more sensitive to sunlight, increasing the risk of sunburn and skin damage. Choices A, B, and C are important aspects of client care but are not specifically related to the side effect of photosensitivity caused by methotrexate.

Correct Answer: A

Rationale: Administering a PRN dose of corticosteroids is the correct first action when a client on long-term corticosteroid therapy presents with weakness and hypotension. In this scenario, the client is likely experiencing adrenal insufficiency due to prolonged corticosteroid use. Administering corticosteroids promptly can help correct this insufficiency and improve the client's symptoms. Placing the client in a supine position may be necessary for symptomatic hypotension, but addressing the root cause with corticosteroids is more crucial initially. Encouraging oral fluid intake is important for many conditions but is not the priority in this case. Reviewing the client's recent medication history can provide valuable information but is not the first action needed to address the client's current presentation.

Correct Answer: C

Rationale: The correct answer is C. Recognizing signs and symptoms of infection should be the nurse's first priority when developing a teaching plan for a client receiving chemotherapy. Chemotherapy often compromises the immune system, making patients more susceptible to infections. Early identification and prompt treatment of infections are crucial to prevent complications. Options A, B, and D are important aspects of care but recognizing signs of infection takes precedence due to the potential life-threatening consequences in clients undergoing chemotherapy treatment.

Correct Answer: A

Rationale: The correct answer is A: 83. The pharmacy provided the infusion at 10 million units per liter, which requires a rate of 83 mL/hour. To calculate this, multiply the dosage by the volume of the IV solution and divide by the concentration of the IV solution in million units: 10 million units per liter x 8.3 L = 83 mL/hour. Choices B, C, and D are incorrect as they do not align with the calculation based on the given information.

Correct Answer: B

Rationale: The correct answer is B. Clients with duodenal ulcers should avoid spicy foods and alcohol as they can exacerbate symptoms and delay healing. Choice A is incorrect because while antacids may help with symptoms, they are not the primary focus of medication teaching for duodenal ulcers. Choice C is not directly related to medication teaching for duodenal ulcers unless antibiotics are specifically prescribed. Choice D is incorrect as stopping all food intake is not recommended and can lead to other complications.