Registro Nacional de Actividad-Registro de la Sociedad Española de Fertilidad de fecundación in vitro e inyección espermática intracitoplasmática. Años 2016 y 2017

Abstract

Introduction

The IVF/ICSI activity records of the National Activity Register-Spanish Fertility Society Register for 2016 and 2017 are presented.

Material and methods

An analysis was made using the data collected for cycles carried out in 240 Spanish centres in 2016, and 239 centres in 2017. The following cycles were studied: IVF/ICSI cycles with fresh own oocytes (2016: 54,024; 2017: 50,263); IVF/ICSI cycles with fresh donor oocytes (2016: 16,133; 2017: 16,774); cycles with cryopreserved embryos (2016: 27,202; 2017: 27,690); Pre-implementation Genetic Testing cycles (2016: 8,032; 2017: 9,268), and cycles with cryopreserved oocytes (2016: 7,769; 2017: 7,798).

Results

A total of 11,028 clinical gestations were obtained for IVF/ICSI with fresh own oocytes in 2016 and 9,710 in 2017, representing a pregnancy rate for fresh embryo transfers of 34.7 and 35.5%, respectively. In 2016, 18.7% of these gestations were multiple, with 16.6% in 2017. For IVF/ICSI with fresh donor oocytes, 12,616 fresh transfers were performed in 2016 and 11,440 in 2017. This resulted in 6,854 (54.3%) clinical gestations in 2016, of which 21.2% were multiple, and in 2017 there were 6,255 (54.7%) clinical gestations with 16.8% multiple gestations. In 2016, 855 (48.1%) gestations were obtained from 1,778 cryotransfers for Preimplantation Genetic Testing, and in 2017 2,953 (52.5%) gestations were obtained from 5,620 cryotransfers. The number of transfers carried out in 2016 with embryos from vitrified own oocytes was 607, and 6,166 with vitrified donated oocytes. In 2017, there were 560 transfers with vitrified own oocytes and 6,072 with vitrified donor oocytes.

Conclusions

The number of cycles with fresh and cryopreserved oocytes has come to a standstill, both for own and donated oocytes, except for Preimplantation Genetic Testing cycles, where the transfer of vitrified rather than fresh embryos is preferred.