American Society for Reproductive Medicine, Birmingham, Alabama, USA.
Fertil Steril. 2012 Nov;98(5):1103-11. doi: 10.1016/j.fertnstert.2012.06.048. Epub 2012 Jul 24.
The majority of miscarriages are sporadic and most result from genetic causes that are greatly influenced by maternal age. Recurrent pregnancy loss (RPL) is defined by two or more failed clinical pregnancies, and up to 50% of cases of RPL will not have a clearly defined etiology.
大多数流产是偶发性的,大多数由遗传原因引起,而遗传原因受母亲年龄的影响很大。复发性妊娠丢失(RPL)定义为两次或更多次临床妊娠失败,高达 50%的 RPL 病例没有明确的病因。