Can a yolk sac be mistaken for a twin pregnancy in 8 week ultrasound?

Hope Not! By 8 weeks, it should be fairly easy to see 2 fetuses with their own hearts. This is a good time to define number of gestational sacs and placental disposition. Exactly what are the credentials of the person doing the sono? That is very important.

Related Questions

How late can you detect a heartbeat from twin pregnancy with transvaginal ultra sound? If demise of one twin will other twin have issues?

Twin is high risk.. Generally, embryonic cardiac activity is seen between 5 and 6 menstrual weeks of pregnancy - single or twins or triplets. If both fetuses share a single placenta (monochorionic, monoamniotic placentation), and if one is demised, the other will likely have problems. A main concern is the effects of twin-twin transfusion. Read more...

Just had an ultrasound at 6wks/2dys twin sacs very close together. I've a very tilted uterus. A yolk sac was seen in one but no fetal pole/hb. Viable?

Twin sacs. You will need to have a few more scans over the coming weeks. It is possible that it was too early to see the fetus/heartbeat of both or either twin. Further scans will help see whether it is a miscarriage or not. It is not uncommon to see twin sacs early, but only one living baby later on. One twin can not develop ( it dies and is resorbed ) while the second twin does well with no problem at all. Read more...