Combined Programmed Intermittent Bolus Infusion With Continuous Infusion for the Thoracic Paravertebral Block in Patients Undergoing Thoracoscopic Surgery: A Prospective, Randomized, and Double-blinded Study.

"Supported by the National Key Research and Development Project of China (No. 2018YFC2001902 to J.X.) and Foundation of Hunan Provincial Health Commission (No. 202215012870 to L.Y.). The authors declare no conflict of interest."

"Supported by the National Key Research and Development Project of China (No. 2018YFC2001902 to J.X.) and Foundation of Hunan Provincial Health Commission (No. 202215012870 to L.Y.). The authors declare no conflict of interest."

"This single-center, 3-arm, prospective randomized trial was conducted at the Second Xiangya Hospital of Central South University, in accordance with the principles of the Declaration of Helsinki. The trial was approved by the local ethics committee (NO. 2019.164) and prospectively registered in the Chinese Clinical Trial Registry (www.chictr.org.cn) with the registration number of ChiCTR1900025277. Written informed consents were obtained from all patients participating in the trial."