近 10年来 ,随着围产医学的发展 ,剖宫产术已成为处理高危妊娠的重要手段之一。由于手术技术的进步 ,抗生素、输血、液体疗法的完善以及麻醉和监测水平的提高 ,手术的危险性已明显降低。近几年来 ,由于社会因素使剖宫产手术指征相对扩大 ,致使剖宫产率增高。在某些情况下 ,剖宫 In the past 10 years, with the development of perinatal medicine, cesarean section has become one of the important means to deal with high-risk pregnancy. Due to advances in surgical techniques, improvement of antibiotics, blood transfusions and fluid therapy, and the improvement of anesthesia and monitoring, the risk of surgery has been significantly reduced. In recent years, due to social factors make the relative expansion of cesarean section indications, resulting in increased cesarean section rate. In some cases, the cesarean section