A nurse is collecting data from a client who is 24 hr postoperative following a total knee arthroplasty. Which of the following findings on the operative leg should the nurse identify as a manifestation of a deep-vein thrombosis?

A. Disposing of insulin needles in a puncture-proof container is a safe practice to prevent accidental needle sticks and transmission of infections.
B. Opened insulin vials should be stored at room temperature, not in the refrigerator, to prevent insulin from crystallizing or becoming too cold for injection.

C. Shaking the insulin vial before drawing it into the syringe can cause air bubbles to form, leading to inaccurate dosing.
D. Regular insulin should appear clear, not cloudy. Cloudiness may indicate contamination or degradation of the insulin, and the client should not use it.

A: Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that can increase the risk of bleeding, especially when taken regularly. Given that the client is on warfarin, a blood thinner used to prevent new clots from forming and existing clots from growing larger, the use of ibuprofen could interfere with its effectiveness and increase the risk of a bleeding event. This is a priority concern for a patient with a history of deep-vein thrombosis. B: While transportation is important for the client to receive care, it does not pose an immediate risk to the client's health compared to the potential interaction between ibuprofen and warfarin.
C: Difficulty with applying compression stockings can contribute to discomfort and noncompliance with treatment, which can impede recovery. However, this does not present an immediate risk as significant as the potential drug interaction.
D: Consuming 15 g of fiber daily is generally a positive health behavior and does not present a direct risk to the client's health in the context of deep-vein thrombosis and the current medications.