Correct Answer: B

Rationale: Nausea is a common side effect of levodopa-carbidopa (Sinemet). Consuming a low-protein snack with the medication can help reduce nausea. The protein in food can compete with levodopa for absorption, so taking it with a low-protein snack may improve its effectiveness and reduce gastrointestinal side effects. Option A is incorrect as taking the medication on an empty stomach may exacerbate nausea. Option C is incorrect because increasing intake of dairy products is not recommended to alleviate nausea. Option D is incorrect because abruptly stopping the medication without healthcare provider guidance can lead to adverse effects.

Correct Answer: A

Rationale: Continuous bubbling in the water seal chamber indicates an air leak, which requires immediate intervention to prevent complications such as pneumothorax. An air leak can lead to ineffective lung expansion, respiratory distress, and compromised gas exchange. Therefore, prompt action is necessary to maintain the integrity of the closed drainage system and prevent further complications. Choices B, C, and D are incorrect because serosanguineous drainage is an expected finding post-thoracotomy, intermittent bubbling in the suction control chamber is normal, and having the chest tube secured to the client's chest wall is essential for stability and proper functioning.

Correct Answer: B

Rationale: The correct pre-procedure instruction the nurse should provide to a client with chronic kidney disease (CKD) scheduled for a renal biopsy is to avoid taking anticoagulant medications for one week before the biopsy. This instruction is crucial to reduce the risk of bleeding during the procedure, as anticoagulants can increase the chance of bleeding complications. Choices A, C, and D are incorrect because maintaining a low-protein diet, drinking plenty of fluids, or taking routine medications with water are not specifically related to reducing the risk of bleeding associated with a renal biopsy in a client with CKD.

Correct Answer: B

Rationale: Prothrombin time (PT) and international normalized ratio (INR) are essential laboratory tests to monitor the effectiveness of warfarin (Coumadin) therapy. These tests help assess the clotting time and the desired anticoagulant effect of the medication. Monitoring PT and INR levels is crucial to ensure that the client is within the therapeutic range, reducing the risk of bleeding or clotting complications associated with warfarin therapy. Platelet count (Choice A) measures the number of platelets in the blood and is not specific for monitoring warfarin therapy. Activated partial thromboplastin time (aPTT) (Choice C) is more commonly used to monitor heparin therapy, not warfarin. Fibrinogen level (Choice D) assesses the amount of fibrinogen in the blood and is not a specific test for monitoring warfarin therapy.

Correct Answer: C

Rationale: The correct instruction for a client prescribed levothyroxine (Synthroid) is to take the medication on an empty stomach. This ensures optimal absorption of levothyroxine. Taking it with a meal can interfere with absorption due to food interactions. Taking it at bedtime may lead to inconsistent absorption as it should be taken at the same time every day in the morning. Taking it with an antacid can reduce the absorption of levothyroxine, making it less effective.