What laboratory tests are likely ordered daily for a patient receiving total parenteral nutrition (TPN)?

Patients receiving total parenteral nutrition (TPN) require meticulous monitoring to ensure their nutritional needs are being met and to prevent complications. Among the tests that are likely ordered daily, checking electrolyte and lipid levels is crucial.

Electrolytes, such as sodium, potassium, calcium, and magnesium, are vital for various bodily functions, including nerve transmission and muscle contraction. Since TPN can cause imbalances, regular monitoring helps in timely adjustments to the TPN solution.

Lipid levels are also monitored because TPN often includes lipid emulsions as a source of essential fatty acids. Maintaining appropriate lipid levels helps prevent complications such as hyperlipidemia or fatty liver disease, which may arise from excessive lipids in the bloodstream.

The other options, while important, do not encompass the critical focus on daily monitoring needed for patients on TPN. Monitoring red blood cell count and complete blood counts is essential but may not be done daily unless there are specific concerns. Glucose levels are important, but they are typically measured more frequently than just daily, and urine tests are not usually necessary every day. Thus, the emphasis on electrolyte and lipid levels makes this option the most relevant for patients receiving TPN.