Effect of ropivacaine, mepivacaine or the combination of ropivacaine and mepivacaine for epidural anaesthesia on the postoperative recovery in patients undergoing caesarean section: a randomized, prospective, double-blind study.

"Declarations Ethics approval and consent to participateThis study was approved by the institutional review board of the Third Affiliated Hospital of Guangzhou Medical University (Guangzhoul, China, registration number 202301239). The study was conducted in accordance with the Declaration of Helsinki, and written informed consent was obtained from all the patients. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding National Natural Science Foundation of China (81271223); Fundamental and Applied Basic Research Foundation of Guangdong Province (2021A1515110106); Guangzhou Science and Technology Project (202102021192)."

"Trial registration This study was registered at Chinese Clinical Trial Registry (Registration number: ChiCTR 2300078288; date of registration: 04/12/2023)."