Comparison of ultrasound-guided serratus anterior plane block and thoracic paravertebral block in postoperative analgesia and inflammation control in patients undergoing upper abdominal surgery.

Objective: To compare the effects of ultrasound-guided serratus anterior plane block (SAPB) and thoracic paravertebral block (TPVB) on postoperative analgesia and inflammation control in patients undergoing upper abdominal surgery.

Methods: This is a retrospective observational study. The records of patients who underwent upper abdominal surgery in our hospital from June 2019 to January 2021 were selected and retrospectively divided into two groups based on the analgesia method.