Inclusion Criteria:  -Patients who are able to do daily activity and walk independently.  Exclusion Criteria:  Patients with history of preoperative abdominal surgery Patients who are unable to walk independently due to musculoskeletal disorder Patients who are allergic to local anesthetics Patients with chronic pain Patients with pacemaker Patients with endotracheal tube postoperatively Patients with history of substance abuse Pregnancy Patients who are unable to communicate due to mental disorder