General characteristics
airway stenosis, tracheal abnormalities, tracheoesophageal fistulas, tumors, thoracic deformities
TUMORS
A total of 148 cases that met the American Society of Anesthesiologists (ASA) classification I–III and who had been selected for VATS in our hospital between December 2019 and November 2020 were enrolled. Of these, 78 cases required left-sided intubation and 70 required right-sided intubation. The sample included 82 males and 66 females aged between 28 and 76 and with a body mass index (BMI) of 18–25 kg/m2, mean (22.1 ± 3.5) kg/m2. Patients with thoracic deformities, tracheal abnormalities, or main airway stenosis, tumors, and tracheoesophageal fistulas were excluded.Preoperative informed consent was given by all patients and their relatives, and approval was obtained from the Ethics Committee of the Second Hospital of Fujian Medical University (2019 Fujian Medical University Second Ethical Review no. 215). The study was registered in the Chinese Clinical Trial Registry with registration no. ChiCTR1900027200. Reporting of the study conforms to broad EQUATOR guidelines [