晚期流产最明显的表现是出现像分娩一样的疼痛、出血(可能会很多，还含有血块、羊膜(羊水)破裂，最终胎体、胎盘、胎膜等排出体外。
Results:The factors were:Operating frequency of cervical,premature rupture of membrane,twin pregnancies. Selection embryo reduction was the correlation factor of late spontaneous abortion,too.
结果:ART后晚期流产和早产的相关因素有宫颈操作次数、胎膜早破以及双胎妊娠,选择性减胎术亦可增加晚期流产的危险。
参考来源 - 辅助生殖技术妊娠后异常时限分娩相关因素分析·2,447,543篇论文数据，部分数据来源于NoteExpress
但是，因相对较小的问题，比如颚裂或内外足而晚期流产的，引起了很大的争议。
But late abortions authorised for relatively minor problems, such as a cleft palate or club foot, have fuelled controversy.
结论：治疗妊娠合并心脏病，早期终止妊娠的方式选用人工流产，晚期终止妊娠的方式首选剖宫产。
Conclusion: Treating the pregnancy with cardiopathy, the artificial abortion will be the first choice for terminating pregnancy at the early stage, while the cesarean section at the late stage.
发生在妊娠12周以前的称早期习惯性流产，发生在12 - 28周之间的为晚期习惯性流产，其中以早期习惯性流产最为多见。
Happened in 12 weeks of pregnancy before said habitual abortion, took place in early December 28 weeks-between the late for habitual abortion, of which the most early habitual abortion more see.
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