Intraoperative pectoral block versus thoracic paravertebral block for postoperative analgesia after breast cancer surgery: A randomized controlled trial.

Background And Methods: With the increasing rate of breast cancer surgery, the pain management of these patients gains importance. The aim of this study is to compare the ultrasound (US) guided thoracic paravertebral block (TPV) versus intraoperative pectoral nerve block (PECS) with a low volume local anaesthetic for postoperative analgesia after breast cancer surgery. A total of 41 patients underwent mastectomy and sentinel lymph node biopsy or modified radical mastectomy were included in this randomized controlled, single-blinded trial.