Methods: the subjects were divided into two groups according to whether PROM or not, both eliminating the obstetrical complication and medical and surgery complication.
方法：将研究对象按是否胎膜早破分为两组，均排除产科并发症及内外科合并症。
2
Methods Extracted 844 cases surgery medical records in obstetrical in 2010, on perioperative use of antimicrobial agents were statistically analyzed.