Correct Answer: B

Rationale: The correct answer is B. Changing the TPN tubing every 24 hours is crucial in preventing infection by reducing the risk of bacterial contamination. Monitoring electrolyte levels (choice A) is essential but not directly related to preventing TPN-related infections. Monitoring blood glucose levels (choice C) is important for clients receiving TPN, but it is more related to glycemic control than infection prevention. Administering insulin as prescribed (choice D) is necessary for clients with diabetes but is not directly linked to preventing TPN-related infections.

Correct Answer: B

Rationale: Administering insulin as prescribed before meals is crucial for managing diabetes. This instruction is vital as it helps the client maintain blood sugar levels within the target range. Checking blood sugar levels once daily is important but not as critical as ensuring the timely administration of insulin. Taking medication only when feeling unwell is dangerous as it may lead to uncontrolled blood sugar levels. Eating carbohydrate-rich meals may actually destabilize blood sugar levels rather than stabilizing them, making it an incorrect choice.

Correct Answer: A

Rationale: Correct answer: The most appropriate management for a patient with congestive heart failure is to administer diuretics to help remove excess fluid and monitor fluid balance. Diuretics help reduce the workload on the heart and alleviate symptoms of fluid overload. Choice B is incorrect because patients with congestive heart failure are usually advised to limit sodium intake and carefully monitor fluid intake. Choice C is incorrect because although oxygen therapy may be necessary in certain cases, it is not the primary management for congestive heart failure. Pain relief is not a primary intervention for this condition. Choice D is incorrect because bronchodilators are not the first-line treatment for congestive heart failure. Encouraging mobility is important, but administering diuretics and monitoring fluid balance take precedence in managing this condition.

Correct Answer: B

Rationale: Instructing the client to administer insulin before meals is a crucial teaching point for a client with diabetes. This action ensures proper glucose management by helping to control blood sugar levels. Monitoring blood sugar levels once a week (Choice A) may not be frequent enough to manage diabetes effectively. While regular exercise (Choice C) is beneficial for glucose control, the immediate administration of insulin is more critical at the time of discharge. Administering oral hypoglycemics as needed (Choice D) is inappropriate as it does not address the need for insulin administration for a client being discharged.

Correct Answer: A

Rationale: The correct answer is A: High sodium diet and lack of physical activity. These are established risk factors for developing hypertension as they contribute to elevated blood pressure. Choice B, low potassium intake and excessive alcohol consumption, may also impact blood pressure but are not as strongly associated with hypertension as high sodium intake and lack of physical activity. Choice C, frequent exercise and a low cholesterol diet, are actually beneficial for reducing the risk of hypertension. Choice D, smoking and family history, are more closely linked to other health conditions such as cardiovascular diseases, rather than being primary risk factors for hypertension.