Читать книгу Need to Know Fertility, Conception and Pregnancy - Harriet Sharkey - Страница 151

In the UK, fertility clinics only replace one or two embryos. Obviously, if two embryos both successfully implant, then you will have twins. You should, however, be aware that twin pregnancy carries a much higher risk of complications than a singleton pregnancy and because of this, some clinics are now performing only a single embryo transfer. Replacing only one embryo reduces the risk of a successful pregnancy compared to replacing two, but this is traded off against a lower risk of complications during a subsequent pregnancy. Your spare embryos can be frozen, stored and replaced at a later date.