Correct Answer: C

Rationale: The correct answer is C. Clients on warfarin therapy need to have their International Normalized Ratio (INR) checked regularly to monitor the medication's effectiveness and prevent complications like clotting or bleeding. Option A is incorrect because increasing leafy green vegetables can affect INR levels due to their vitamin K content. Option B is incorrect as grapefruit juice is not a significant concern with warfarin. Option D is important for medication adherence but does not specifically address the monitoring aspect required for warfarin therapy.

Correct Answer: D

Rationale: The correct finding the nurse should report to the provider is decreased breath sounds in the right lower lobe. This can indicate a respiratory infection or atelectasis in clients with COPD, requiring further evaluation and intervention. Choice A, an oxygen saturation of 91%, although slightly lower than normal, does not necessarily require immediate reporting unless the client's baseline is significantly higher. Choice B, the use of pursed-lip breathing, is actually a beneficial technique for clients with COPD to improve oxygenation and reduce shortness of breath, so it does not need reporting. Choice C, a productive cough with green sputum, can be common in clients with COPD and may indicate an infection, but it is not as concerning as decreased breath sounds in a specific lung lobe which may signify a more acute issue.

Correct Answer: C

Rationale: A serum potassium level of 3.2 mEq/L indicates hypokalemia, a complication that should be reported in clients receiving TPN. Hypokalemia can lead to serious cardiac and neuromuscular complications. The other options are within normal ranges and do not indicate immediate concerns for a client receiving TPN. A blood glucose level of 130 mg/dL, serum sodium level of 140 mEq/L, and platelet count of 250,000/mm³ are all considered normal values and do not require immediate intervention.

Correct Answer: A

Rationale: The correct answer is to monitor aPTT. Activated Partial Thromboplastin Time (aPTT) is crucial for patients on heparin therapy as it helps determine the clotting ability of the blood. By monitoring aPTT, healthcare providers can adjust the dosage of heparin to maintain therapeutic levels and prevent bleeding complications. Monitoring INR is more commonly associated with warfarin therapy, not heparin. Monitoring platelet count is important for assessing the risk of bleeding or clotting disorders but is not specific to heparin therapy. Monitoring sodium levels is not directly related to assessing the effectiveness or safety of heparin therapy.

Correct Answer: D

Rationale: The correct instruction for a client with DVT is to elevate the affected extremity when in bed. Elevation helps reduce swelling by promoting venous return. Limiting fluid intake could lead to dehydration and is not recommended. Massaging the affected extremity can dislodge a clot, leading to serious complications. Applying cold packs can cause vasoconstriction and should be avoided in DVT.