This clinical trial is focused on patients undergoing liver surgery due to liver tumors. The study is investigating the use of lidocaine, a local anesthetic, administered through an intravenous solution, to see if it can help improve recovery after surgery. The trial will also use sodium chloride, commonly known as saline, as part of the treatment process. The main goal is to evaluate how effective lidocaine is in helping patients recover from a minor liver surgery, known as a hepatectomy.

Participants in the study will receive either lidocaine or a placebo during their surgery. The study will monitor various aspects of recovery, such as the amount of pain medication needed in the first 24 to 48 hours after surgery, the intensity of pain experienced, and any complications that may arise. Other factors being observed include the time it takes for normal bowel movements to resume, any feelings of nausea or vomiting, and the overall length of the hospital stay.

The study will also measure the concentration of lidocaine in the blood at different times during the surgery and recovery process. The aim is to gather comprehensive data on how lidocaine affects recovery and to assess any potential side effects or adverse events. This information will help determine if lidocaine can be a beneficial addition to the recovery process for patients undergoing liver surgery.