Couples who have resorted to in vitro fertilization (IVF) due to infertility problems often opt for double embryo transfers rather than single embryo transfers. The common logic underlying such a decision is often because patients want to increase their chances of getting pregnant. However, according to a report published on the yourhealth website,twin pregnancies are riskier.
The article is based on the results from a Swedish study which found that carrying twins after undergoing IVF was riskier than having two babies separately through IVF. Lead researcher Antonina Sazonova was quoted as saying “The neonatal and maternal outcomes were dramatically better for women undergoing two IVF singleton pregnancies compared with one IVF twin pregnancy after double-embryo transfer.”
Strong support for single embryo transfers
The debate over multiple births have been going on for quite some time with no consensus anytime soon. However, with the results of this study, advocates for single embryo transfers now have more evidence to back up their case. Lead researcher Antonina Sazonova wrote in the journal Fertility and Sterility “These results support single-embryo transfer to minimize the risks associated with twin pregnancies.”
The study was conducted by collecting information from Swedish IVF clinics between 2002 and 2006. The data comprised of 991 mothers who had twins through IVF and 921 mothers who had 2 separate children through IVF. The report states that almost half (47%) were prematurely born and 39% of the twin babies weighed less than what was considered healthy. On the other hand, only 7% of singleton babies were born prematurely and less than 5% had unhealthily low weights.
Read about some other complications on the next page…