The Impact of Video-assisted Thoracic Surgery and Regional Anaesthesia on Postoperative Opioid Consumption and Pain Scores

Inclusion Criteria: * aged 18-75 years * American Society of Anaesthesiology (ASA) score I-III * body mass index (BMI) \<35kg/m2 * scheduled for elective VATS Exclusion Criteria: * ASA score ≥4 * BMI ≥35 kg/m2 * declining to give written informed consent * controendications for block application * inability to undergo block application * history neurological disease or peripheral nerve disease * history of chronic opioid use * history of severe liver or kidney failure * patients admitted to the intensive care unit postoperatively intubated