Trial design
ESPB
This prospective, randomized, 3-arm, observer-blinded, controlled trial was conducted to compare the efficacy of analgesia between ESPB and SAPB in patients undergoing uniportal VATS. The study was approved by the Ethics Committee of Shanghai Pulmonary Hospital (reference number K19-006), and registered at the Chinese Clinical Trial Registry on March 5th, 2019 (reference number ChiCTR1900021695). Written informed consent was obtained from all eligible patients prior to enrollment, upon their arrival in the operating room for the scheduled surgery.