Some IVF clinics copy our services, texts, presentations and arrange seminars in the same locations. Please be attentive to which seminar you register and which clinic you land in. Dr. Olga Zaytseff and her team runs own clinic O.L.G.A. in St. Petersburg and does not work for any other clinics. Lectures at our seminars are personally done by Dr. Olga Zaytseff

Egg aging and its consequences

Aging of human eggs starts after 30 years old. It results in the increase of amount of eggs with spontaneously occurred mistakes in the chromosome number.

The percentage of abnormal eggs and embryos grows with the age of a woman. If we look into the pool of eggs collected in one egg collection there will be around 20-25% of abnormal eggs in the age of 30, 40-45% of abnormal eggs in the age of 35 and 70-75% of abnormal eggs in the age of 40. The percentage of abnormal eggs grows dramatically after the age of 40 so that it is hardly possible to find normal eggs in the age above 43 [D. Wells, 2013]. As a result 1 in 4 morphologically good blastocysts is aneuploid in the age of 30, and 3 in 4 morphologically good blastocysts are aneuploid in the age of 41. [Ata, Munne al 2012 – 875 cycles, 4600 embryos]

Conclusion: The percentage of abnormal embryos increases with the age of an egg.

Hence a reliable method is required to sort aneuploid embryos out before embryo transfer. This method is called PGS – pre-implantation genetic screening. Contemporary PGS techniques allow testing for all 46 chromes.

“Three times I went to Russia to pick up some eggs. Six embryos tested by PGS and one was good ))) This little embryo was born when I was 44 and the egg they used was from me when I was 43…”

Susanne

After 3 IVF in Sweden, 3 miscarriages, Elisabet and Pär became parents of lovely Ester through egg donation in St. Petersburg

“…When I left the clinic and walked down the Nevsky Prospect I knew I was pregnant — and the feeling was right! 9 month after her visit at the AVA Clinic Alexander was born!”

Ewa and Sten


Having questions? Ask our doctors now!

A blog by Tone Bråten

A blog — to help you on your journey to become parents!

Our patients tell their stories



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