The 12-year-old frozen embryo was implanted into an unnamed woman’s womb and brought to term in Tangdu Hospital, Shaanxi Province, China.
The new mother has reportedly suffered from polycystic ovary syndrome and blocked fallopian tubes, health problems that can affect a woman’s chances of conceiving a baby and pregnancy, that’s why she turned to in vitro fertilization (IVF) in 2003.
Last year the couple decided they wanted to try to have another baby. Out of seven frozen embryos, three survived the thawing process, two of them were implanted and on Wednesday morning, a 40-year-old woman gave birth to her second son, weighing 3,440 grams.
“Our first boy is 12 years old now. The purpose of freezing the embryos was to have a second child some day, and luckily, we succeeded,” the woman’s happy husband said. Embryos can be either “fresh” from fertilized egg cells of the same menstrual cycle, or “frozen”, that is they have been generated in a preceding cycle and undergone embryo cryopreservation, and are thawed just prior to the transfer. The outcome from using cryopreserved embryos has uniformly been positive with no increase in birth defects or development abnormalities.