Egg donation in Spain, how many eggs and embryos are needed to achieve a pregnancy?
Egg donation in Spain is a widely used technique, linked mainly to delayed pregnancy. It is a treatment frequent in women over 40 years of…
The majority of couples undergoing egg donation have a diagnosis of ovarian failure due to age or other reasons. These couples have a pregnancy at term rate, using their own oocytes in IVF, below 10% per cycle. Oocyte donation increases their chances of pregnancy and lowers the risk of miscarriage. In URH Garcia del Real, the pregnancy rate per embryo transfer in egg donation is 64% per cycle (slightly higher than the Spanish mean).
This graphic shows how the pregnancy rate increases as more cycles are performed and frozen embryo transfers are added. We accomplish a cumulative pregnancy rate of 96% after 3 donor egg cycles; that means, 96% of URH García del Real patients will conceive with egg donation.
One of our main goals is to achieve a singleton pregnancy. In oocyte donation, we perform single embryo transfers with no lowering of the pregnancy rate and with a virtually nonexistent risk of twins.
These graphics show the mean pregnancy rates in URH García del Real in the last 5 years compared with the Spanish mean (published by the Registry of the Spanish Fertility Society).
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