Twins With Only 1 Yolk Sac

1 Replies
KSampsell - November 6

Hello! My husband and I recently found out that we were pregnant with our 2nd child..well we went today for our first US and found that we are having twins. We were ecstatic and totally not expecting this since twins do not run in our families. The doctor had me come back this afternoon because the US technician noted that they could not find a second yolk sac and it appears that the babies may be sharing. I have to go later this week for a very in depth sonogram at perinatologist (sp?) My doctor wasnt a wealth of information on this subject, but seemed pessimistic about the outcome...so I was wondering if any one has been thru this and could offer me some advice and hopefully a little optimism! Thanks

 

samehere - November 6

If they are sharing a yolk sac then that would mean they are in the same sac and will be sharing the placenta. Monochorionic, monoamniotic are about 1% of identicals. .This means they are identical (not hereditary) and it is, I hate to say this, the most dangerous setting for twins to be in. Sharing a sac will have problems with cord entanglement and sharing a placenta will have chances of TTTS or Twin to Twin Transfusion Syndrome where one twins gets to much and one gets too little from the placents which is dangerous for both. I really hope they find the second sac for you and that things work out fine.

 

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