First of all the patient should know that the risk of giving birth to the infant with congenital defects at the extracorporeal fertilization isn’t higher than the same risk at the spontaneous pregnancy.
But extracorporeal fertilization increase the risk of multiple pregnancy and therefore all the complications that are caused by development of several embryos in the uterus at the same time. One should notice that it may cause miscarriages and premature delivery. And low-birthweigh babies may suffer from weak developed lungs, problems with locomotor apparatus and nervous system That is why the doctors try to avoid simultaneous transfer multiple embryos into the uterus..
In case of simultaneous development of three and more embryos reducing of embryos is parasitized. This procedure on the contrary may cause premature delivery, miscarriage or infection of the organs of small pelvic..
In should be mentioned that in cases of extracorporeal fertilization the risk of extrauterine pregnancy is a little higher (15%), that is intended operative intervention up to the removal of the embryo. Extrauterine pregnancy may be prevented by timely and close examination of the fetus.