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目的：研究避免腹膜外剖宫产副损伤的方法；方法：作者对８９例晚期妊娠孕妇的反折腹膜缘和膀胱顶的位置及体表投影进行了测量。结果：孕妇年龄２６．９±４．１（２０～４０）岁；孕周３９．５±１．１（３７～４２）周。结果显示反折腹膜缘与脐和耻骨联合上缘间距分别为１５．８±４．０ｃｍ和５．７±１．９ｃｍ；膀胱顶与脐和耻骨联合上缘间距分别为１３．７±３．６ｃｍ和７．２±２．２ｃｍ。结论：在腹膜外剖宫产术时，应按反折腹膜缘及膀胱顶的位置与体表投影进行腹膜剥离。
OBJECTIVE: To study the method of avoiding secondary injury of cesarean section by extraperitoneal method. Methods: The authors measured the location and surface projection of the peritoneal and parietal crest of 89 pregnant women with advanced pregnancy. Results: The pregnant women were 26.9 ± 4.1 (20-40) years old and 39.5 ± 1.1 (37-42) weeks pregnant. The results showed that the distance between the retroperitoneal border and the upper edge of the umbilicus and pubic symphysis were 15.8 ± 4.0cm and 5.7 ± 1.9cm, respectively. The distance between the top of the bladder and the upper edge of umbilical and pubic symphysis was 13.7 ± 3. 6cm and 7.2 ± 2.2cm. Conclusion: In the extraperitoneal cesarean section, the peritoneal dissection should be performed according to the location of the retroperitoneal and the top of the bladder with the projection of the body surface.