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| POSTED 6/22/2006 |
Success of Single Embryo Transfer |
Two studies recently published in the journal Fertility and Sterility indicate that transfer of a single embryo in an IVF cycle can reduce the numbers of twins conceived while maintaining high pregnancy rates.
Researchers in Seattle examined the results of more than 200 IVF cycles where the patients had either one or two embryos transferred. The patient and cycle characteristics were similar for the two groups. The study revealed that while implantation and live birth rates were virtually the same for the two groups, there was a significant difference in the number of twins. Similar results are being published from an Australian study as well. There, patients who had a single embryo transfer had nearly as high a pregnancy rate, but a much lower incidence of twins than patients who transferred two embryos.
“This research shows the continued progress we are making in addressing the problem of multiple births. These studies will help us move to the goal of singleton pregnancies for all our patients” said William Gibbons, MD President of the Society for Assisted Reproductive Technology.
Another study conducted by researchers in Finland published on June 1, 2006 in the journal Human Reproduction found that transferring only one embryo during IVF is as successful in older women (ages 36 to 39) as it is in younger women (age 35 and under).
Date Posted: August 8, 2006
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