Study design and patients
pain
The prospective, randomized, and double-blind trial was conducted in two centers (Ankara Bilkent City Hospital and Ankara Atatürk Sanatorium Training and Research Hospital) after obtaining approval from the Ankara City Hospital Ethical Committee (IRB: E.Kurul-E1-22-2534 / 04.2022). The trial was registered on Inclusion criteria included age between 18 and 80 years, body mass index (BMI) between 18 and 40 kg/mPatients scheduled for lung resection with VATS procedure in two centers were identified as possible candidates for the study. Patients who met the inclusion criteria stated on the day of surgery were randomized in the operating room and an appropriate block procedure was planned. All information about the study was explained in detail to all patients. The patients included in the study were given training on pain assessment and the use of the patient-controlled analgesia (PCA) device.