The nurse reviews the preoperative laboratory results for a client scheduled for abdominal surgery. The client's serum potassium level is pending. Why is it important for the nurse to check the potassium level before surgery?

Potassium levels determine the client's ability to tolerate pain medications

To assess kidney function.

Low potassium levels increase the risk for postoperative infection

Elevated potassium can cause excessive bleeding during surgery

Abnormal potassium levels can lead to dysrhythmias during and after surgery