There are a lot of opinions on this subject Family Makers Surrogacy is ready to provide some hard facts based on data and reports.
What are SET and DET?
Single Embryo Transfer (SET) in gestational surrogacy is when one embryo, created with the biological material of the Intended Parents, donor eggs or donor sperm is implanted through the IVF process into the uterus of the gestational carrier. In a Double Embryo Transfer (DET) or Multiple Embryo Transfer, 2 or more of the embryos are implanted into the surrogate.
What are the misconceptions about double embryo transfer?
A common misconception that more babies equals more pregnancies also doesn’t hold true. Multiples Pregnancies carry an increased risk of complications like preterm delivery and miscarriage – not to mention the increased risk to the babies and the carrier.
What Are the Risks Associated with a Multiple Embryo Transfer?
high blood pressure of pregnancy.
abnormalities including neural tube defects (like spina bifida), gastrointestinal, and heart abnormalities.
identified, but vanishes (or is miscarried), is a risk. Those that do survive the first trimester are 4 times
more likely to die in pregnancy.
Bed Rest for the Gestational Surrogate
PROM, Postpartum Hemorrhage are much more common in multiple pregnancies. For working moms pursuing surrogacy, many risks listed require physician ordered bedrest during which Intended Parents are financially responsible for all lost wages during that time. Outside of the additional financial obligations, limited activity restrictions can cause significant stress to the Gestational Carrier, as well as burdens on her spouse and on her family.
Preterm Labor & Birth
What is the gestational surrogacy success rate?
In 1995, the number of embryos transferred at one time was 4 – resulting in multiple births 30% of the time. Today, that number is just above 1 embryo – resulting in multiple births less than 10% of the time. Why or how? With improvements in IVF technology and fertility treatments – doctors can now transfer less embryos with a higher birth rate success.
A 2019 report from SART, indicates that there is on average over an 95% success birth rates for full-term births utilizing a gestational carrier with a single embryo transfer.
PGT is often recommended by some fertility clinics because they want to transfer the healthiest embryos. Typically, the best embryo(s) will be transferred during an elective single-embritum transfer (eSET). The remaining embryos will then be frozen. This process only improves the success rate.
As every clinic, embryo, gestational carrier and situation is unique, we highly encourage you to discuss the risks of SET vs DET with your surrogacy agency and your physician to determine what risks would apply to your journey.