Background
visceral pain
NEONATAL ASPHYXIA, COMPLICATIONS
China's "open childbirth policy" is anticipated to increase the number of women undergoing repeated cesarean section (C-section). C-section has typically been performed under epidural anesthesia due to its safety and controllability [The ability of extracellular vesicles (EVs) to transport specific components of proteins, lipids, RNA and DNA, as well as deliver various physiological information is well recognized [Here, this prospective and randomized clinical trial was designed to investigate the effects of intravenous remifentanil in parturients undergoing repeated C-section under epidural anesthesia. The primary outcome was the number of UEs. Secondary outcomes included the size and protein amount of UEs, the vital signs, visceral pain score, sedation score, score of maternal satisfaction, Apgar score, the incidence of neonatal asphyxia, umbilical arterial pH, and the presence of complications.