Research by fertility experts in Finland has demonstrated for the first time that in many cases transferring a single embryo to the womb in women undergoing IVF is just as likely to result in pregnancy and a live birth in those aged 36 to 39 as it is in younger women.
Their study indicates that it is the quality of the embryo that is more important in determining the success of IVF rather than the age of the woman. This is a finding that could encourage wider acceptance of single embryo transfer in women in their late 30s – an age group that up to now in most countries has been thought to benefit from having two embryos transferred at any one time, despite the risk of multiple births.
The research, published today (Thursday 1 June) in Human Reproduction, analysed 1,224 fresh IVF/ICSI cycles and 828 frozen embryo transfers in women aged 36-39. They [c]ompared results in the case of elective single embryo transfer (eSET) with a top quality embryo, elective single embryo transfer with a non-top quality embryo, compulsory single embryo transfer (because there was only one embryo available) and double embryo transfer (DET). They also analysed the cumulative results i.e. the results for women who underwent more than one cycle of treatment using fresh and frozen embryos.
Margaret Willson | alfa
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