METHODS
This randomized, controlled study was conducted at First Affiliated Hospital of Nanchang university. After approval by the hospital's Clinical Research Ethics Committee and written informed consent was obtained from all patients participating in our study. Then it was registered in the Chinese Clinical Trial Registry (registration number ChiCTR 2200058987). Our study was completed from 1 March 2022 to 26 July 2022.The inclusion criteria of this study included people aged over 65 years old, American Society of Anesthesiologists physical status II/III, body mass index of 18–25 kg/m