Correct Answer: B

Rationale: The correct answer is B: Carotid bruit. A carotid bruit is a significant risk factor for stroke as it indicates turbulent blood flow due to narrowing of the carotid artery. Nuchal rigidity is associated with meningitis, jugular vein distention can be a sign of heart failure, and palpable cervical lymph nodes may indicate infection, but they are not directly linked to stroke risk.

Correct Answer: B

Rationale: A weight gain of 6.6 pounds is approximately equivalent to 3 liters of fluid. It is important to remember that 1 liter of fluid is equal to 1 kg, which is approximately 2.2 pounds. Therefore, when the client gains 6.6 pounds, it translates to 3 liters of fluid. Choices A, C, and D are incorrect as they do not align with the conversion rate of 1 liter of fluid to 2.2 pounds.

Correct Answer: B

Rationale: The correct answer is B: Stasis of blood flow. Stasis of blood flow in immobile clients increases the risk of DVT, as lack of movement can cause blood to pool and clot. Atherosclerotic plaque formation (choice A) and atherosclerotic vessel changes (choice D) are more related to arterial diseases rather than DVT. Endothelial damage (choice C) can contribute to the development of DVT, but in an immobile client, stasis of blood flow is the most significant factor.

Correct Answer: C

Rationale: To infuse 100 mL in 45 minutes, the infusion rate should be set to 133 mL/hour (100 mL / 0.75 hours). This calculation is obtained by dividing the total volume to be infused by the total time for infusion (100 mL / 0.75 hours = 133 mL/hour). Therefore, choice C is the correct answer. Choices A, B, and D are incorrect because they do not accurately calculate the infusion rate required to deliver the medication within the specified time frame.

Correct Answer: D

Rationale: Verifying tube placement by checking the pH of gastric contents is crucial to ensure the nasogastric tube is correctly positioned in the stomach. This action helps prevent complications such as aspiration. Flushing the tube with normal saline every 8 hours is not necessary for ensuring proper functioning of the tube. Clamping the tube when not in use may lead to the build-up of gastric secretions and blockages. Positioning the client in a supine position is not directly related to ensuring the proper functioning of the nasogastric tube.