The effect of intraoperative cheek acupuncture on the recovery of gastrointestinal function after cesarean section.

INTERVENTION: Facial acupuncture group:After the delivery of the fetus, needle acupuncture is performed at specific facial acupoints and retained until the end of the surgery.;Sham acupuncture group:Use a blunt‐tipped dummy needle to gently touch the skin without piercing it.;blank control group:Do not accept any intervention in the buccal area.; CONDITION: The Impact of Gastrointestinal Function Recovery PRIMARY OUTCOME: Time to first postoperative flatus; SECONDARY OUTCOME: First bowel movement time;Abdominal distension/nausea and vomiting/intestinal obstruction incidence rate;Postoperative pain score (NRS);Hospitalization Duration;Incidence rate of anxiety and depressive disorders; INCLUSION CRITERIA: INCLUSION CRITERIA: Age 18–40 years Full‐term pregnancy (gestational age =37 weeks), singleton pregnancy Elective cesarean section at the lower uterine segment ASA class II Voluntary signed informed consent