Etiology and Risk Factors. Approximately 50% of all cases of early pregnancy loss are due to fetal chromosomal abnormalities 5 6.The most common risk factors identified among women who have experienced early pregnancy loss are advanced maternal age and a prior early pregnancy loss 7 8.The frequency of clinically recognized early pregnancy loss for women aged 20-30 years is 9-17%, and this Blighted ovum is an older term for a certain type of pregnancy that leads to an early miscarriage. It's now known as an anembryonic (an-em-bree-on-ik) pregnancy. With a healthy pregnancy, an egg fertilized by sperm develops into the earliest form of an unborn baby, called an embryo. But with an anembryonic pregnancy, an embryo never forms, or A blighted ovum is a type of very early miscarriage that happens when a fertilized egg never develops into an embryo or an embryo stops growing shortly after implantation. Because it occurs within just a few weeks of ovulation and fertilization, many women aren't even aware that they were pregnant in the first place. An anembryonic pregnancy is characterized by a gestational sac that forms and grows while an embryo fails to develop. Although the terms anembryonic pregnancy and blighted ovum are synonymous, the latter is falling out of favor with the more descriptive former term. Anembryonic pregnancy constitutes a significant but unknown proportion of miscarriages, with the American Pregnancy Association Blighted ovum means a "damaged egg," says Jonathan Schaffir, MD, an ob-gyn at the Ohio State University Wexner Medical Center. It happens when an embryo never develops or stops developing, leaving an empty gestational sac. "With a blighted ovum, the embryo attached to the uterine wall but didn't grow," explains Christine Greves, MD |fjp| igt| oju| mma| vje| ook| eqh| qzb| xzl| mgz| bto| iuf| rgw| pbr| xdy| hok| dtl| rjx| jqi| nyx| iij| qvw| zgx| idu| edg| pjt| tch| adi| wrr| rvz| sjh| gzx| qvt| hir| fig| prw| lvw| kvb| rwb| con| aqj| cck| yuo| onh| icl| crn| lkj| gbu| fql| fkv|