Correct Answer: C

Rationale: The correct answer is C: "Keep the ulcer clean and dry." For clients with diabetes mellitus, it is crucial to maintain foot ulcers clean and dry to prevent infection and promote healing. Moist environments can lead to bacterial growth and delay healing. Applying a heating pad (Choice A) can increase the risk of burns and further damage the ulcer. Wearing tight-fitting shoes (Choice B) can cause friction and pressure on the ulcer, hindering the healing process. Limiting walking (Choice D) excessively can affect circulation and delay healing. Therefore, the nurse should instruct the client to keep the ulcer clean and dry for optimal wound care management.

Correct Answer: B

Rationale: The correct answer is B: Lowered cholesterol levels. Atorvastatin is a medication commonly prescribed to lower cholesterol levels, which is crucial in reducing the risk of further cardiovascular events, including myocardial infarction (MI). Monitoring cholesterol levels is essential to assess the effectiveness of atorvastatin therapy and its role in preventing future cardiac complications. Choices A, C, and D are incorrect because increased blood pressure, decreased heart rate, and improved liver function are not direct indicators of atorvastatin's effectiveness in a client with a history of MI.

Correct Answer: B

Rationale: Encouraging passive range-of-motion exercises is the most appropriate intervention to help relieve symptoms of joint pain and stiffness in clients with severe rheumatoid arthritis. These exercises help maintain joint mobility, prevent muscle contractures, and reduce stiffness in the affected joints. Passive range-of-motion exercises can also improve circulation to the joints, promoting healing and reducing pain. Applying cold packs may help with inflammation and pain temporarily, but it does not address the long-term joint mobility issues associated with rheumatoid arthritis. Muscle relaxants are not typically indicated for managing joint pain and stiffness in rheumatoid arthritis. While nutrition is important for overall health, providing a high-calorie diet is not a direct intervention for relieving joint pain and stiffness in this context.

Correct Answer: C

Rationale: Regular monitoring of blood pressure is crucial for individuals with hypertension to assess the effectiveness of the prescribed medication and to ensure blood pressure is within the target range. This helps in managing hypertension and preventing complications associated with high blood pressure. Choices A, B, and D are incorrect because while taking the medication in the morning may be recommended for some drugs, it is not the key instruction for hydrochlorothiazide. Avoiding foods high in potassium and decreasing high-sodium foods are important dietary considerations for certain conditions, but they are not the immediate focus when starting hydrochlorothiazide.

Correct Answer: B

Rationale: Encouraging frequent rest periods is essential in managing hyperthyroidism as it helps address the fatigue and hypermetabolic state commonly associated with this condition. Rest is crucial to support the body's recovery and reduce the stress on the thyroid gland. While nutrition is important in managing hyperthyroidism, providing a high-calorie diet is not the priority intervention. Restricting fluid intake is not typically necessary unless there are specific indications such as heart failure. Administering a stool softener is not directly related to managing hyperthyroidism.