Correct Answer: B

Rationale: The correct answer is B: 'Avoid drinking grapefruit juice.' Grapefruit juice can increase the risk of toxicity when taken with simvastatin. Instructing the client to avoid grapefruit juice helps prevent this interaction. Choice A is incorrect because the timing of medication administration for simvastatin is usually in the evening. Choice C is unrelated to simvastatin therapy. Choice D is not necessary for monitoring while taking simvastatin.

Correct Answer: A

Rationale: To assess a patient for potential deep vein thrombosis (DVT), healthcare professionals should look for unilateral leg swelling. This is a classic sign of DVT. While encouraging early mobilization is generally beneficial for preventing DVT, it is not a method of assessment. Checking for calf tenderness is also relevant but not as specific as unilateral leg swelling. Observing for redness and warmth can be signs of inflammation but are not as specific to DVT as unilateral leg swelling.

Correct Answer: A

Rationale: Infection and electrolyte imbalance are common complications of TPN. Infection can occur due to the invasive nature of TPN, which provides a direct route for pathogens. Electrolyte imbalances can arise from the composition of the TPN solution or improper monitoring. Hyperglycemia and sepsis (Choice B) are potential complications but are not as directly associated with TPN as infection and electrolyte imbalance. Kidney failure and hypovolemia (Choice C) are less common complications of TPN. Fluid overload and liver damage (Choice D) are potential complications but are not as frequently observed as infection and electrolyte imbalance.

Correct Answer: A

Rationale: The correct answer is A: Leg pain, swelling, and redness are early signs of DVT. DVT (Deep Vein Thrombosis) is a condition where blood clots form in deep veins, commonly in the legs. These clots can cause symptoms like pain, swelling, and redness in the affected leg. Choices B, C, and D describe symptoms more commonly associated with other conditions like pulmonary embolism (shortness of breath and high fever), respiratory issues (cough and chest pain), and cardiovascular problems (decreased oxygen saturation and low blood pressure), respectively. Therefore, they are not indicative of early signs of DVT.

Correct Answer: B

Rationale: The correct teaching point is to maintain two points of support on the ground at all times when using a cane. This ensures stability and helps distribute weight evenly. Choice A is incorrect because the cane should be used on the stronger side of the body to provide support to the weaker leg. Choice C is incorrect as advancing the cane too far with each step can lead to imbalance. Choice D is incorrect as advancing the cane and the strong leg simultaneously may not provide adequate support for the weaker leg.