诊断胎膜破裂,靠直接观察或闻味是不准确的。测定阴道内液体的二氨氧化酶需要时间和化验室的协助。用各种方法来测定是否是尿液,也不能排除胎膜破裂。本文采用Abe(1940)的建议,应用硝嗪黄浸润的拭子,作为测定阴道pH的指示剂,以诊断胎膜破裂。 Diagnosis of fetal membranes rupture, by direct observation or smell smell is not accurate. Determination of vaginal fluid ammonia enzyme requires time and laboratory assistance. In a variety of ways to determine whether it is urine, it can not rule out the rupture of membranes. In this paper, Abe (1940) proposal, the application of nitrazine yellow infiltration swab, as a measure of vaginal pH indicator to diagnose the rupture of membranes.