A nurse is reviewing laboratory results for a client who is scheduled for surgery this morning. Which of the following results will cause the nurse to place a call to the surgical team?

A. Encouraging adequate fluid intake is important postoperatively to maintain hydration and support normal physiological functions. However, the amount of fluid intake should be within the client's tolerance and as prescribed by the healthcare provider. It helps prevent complications such as dehydration and promotes circulation, which is beneficial for wound healing.

B. While some rest and limited mobility are initially recommended after knee replacement surgery to allow for healing and to prevent complications, prolonged bed rest for 5-7 days is not typically necessary or recommended. Early mobilization and gradual increase in activity are encouraged to prevent complications such as deep vein thrombosis and to promote recovery.
C. Placing a pillow directly under the knee is not recommended as it can lead to decreased range of motion and potential contractures.
D. Cold therapy, such as applying cool compresses, is often used to reduce swelling and pain in the initial postoperative period. It can help manage pain and discomfort and promote comfort for the client.

A. A potassium level of 2.9 mEq/L is below the normal range (typically 3.5-5.0 mEq/L). Abnormal potassium levels can affect cardiac function, leading to arrhythmias (irregular heartbeats), especially if the potassium level drops further or if there is rapid fluctuation. This is a critical finding that requires immediate attention from the surgical team to assess the client's cardiac status and determine if potassium replacement is needed before proceeding with surgery.
B. Creatinine levels are used to assess kidney function. A creatinine level of 1.2 mg/dL is within the normal range (typically 0.6-1.2 mg/dL). While kidney function is important to evaluate before surgery, this result is not immediately concerning enough to require an urgent call to the surgical team.
C. Hemoglobin levels are assessed to evaluate oxygen-carrying capacity of the blood. A hemoglobin level of 14.8 g/dL is within the normal range (typically 12-16 g/dL for women and 13-18 g/dL for men). This result indicates adequate oxygen-carrying capacity and does not require immediate communication with the surgical team.

D. Sodium levels are important for fluid balance and nerve function. A sodium level of 134 mEq/L is within the normal range (typically 135-145 mEq/L). While sodium levels should be monitored, this result is not critically abnormal and does not necessitate an urgent call to the surgical team.