What lab result may indicate a possible complication in a client receiving TPN?

In the context of total parenteral nutrition (TPN), monitoring electrolyte levels is crucial, as complications can arise from both imbalances and metabolic changes associated with TPN administration. An elevated serum calcium level, such as 12.5 mg/dL, can indicate potential complications. Hypercalcemia may occur due to various factors, including improper supplementation or disruption in calcium regulation in the body, especially when receiving TPN that may not provide the necessary balance of nutrients and electrolytes.

Elevated calcium levels can lead to various complications, including kidney stones, symptoms of increased calcium such as confusion or lethargy, and can affect cardiac function. Therefore, finding an elevated serum calcium level in a client receiving TPN warrants further investigation and potential intervention to ensure the patient is not experiencing such complications.

In contrast, normal levels of serum sodium, potassium, and even a serum glucose level at 180 mg/dL do not indicate immediate complications related to TPN. While elevated glucose requires attention, particularly if it is persistently high, it is not as directly associated with serious acute complications as hypercalcemia is.