“…Good anesthetic practice is composed of adequate analgesia, appropriate sedation, satisfying surgical requirements and rare side effect, thus contributes to good patient satisfaction. Nowadays, most cesarean sections are conducted under neuraxial anesthesia of which EA is one of the most popular anesthesia techniques, due to it's simple, well controllable and cost effective (22). However, many parturients (around 45%-90%) didn't get completely analgesia and high comfort during surgery as a possible consequence of incomplete blockade of large nerve roots such as L5, S1 and S2 (5), which may result in serious visceral pain when surgeon's handling intraperitoneal organs or uterine contraction (6).…”