Resultados de inseminación artificial (conyugales y de donante) del Registro Nacional de Actividad – Registro de la Sociedad Española de Fertilidad en los años 2018 y 2019

Introduction. Artificial insemination is a widely used assisted reproduction technique, despite controversy over its usefulness. This document presents the data from the National Register of Activity in Assisted Human Reproduction (RNA – Register SEF), for Artificial Insemination during 2018 and 2019.

Material and methods. The data for conjugal and donor artificial insemination (AI-C and AI-D respectively) collected by the RNA – Register SEF during 2018 and 2019 was analysed and compared with data obtained in previous years. Participation was mandatory for Spanish assisted reproduction centres and annual aggregate data was collected by centre and in situ monitoring carried out at random on data provided by more than 15% of participating centres. A total of 34,100 cycles were analysed in 2018 (21,467 AI-C cycles and 12,633 AI-D cycles) and 32,548 cycles in 2019 (18,948 AI-C and 13,564 AI-D cycles).

Results. No significant differences were observed in the overall gestation rate per cycle, either for AI-C (2018: 13.1%; 2019: 12.8%) or for AI-D (2018: 19.0%; 2019: 18.8%). In 2018, 11.6% of the pregnancies obtained through AI-C were multiple pregnancies. Similar figures of 9.9% were obtained in 2019. Similar results have been observed in AI-D, where the multiple gestation rate was 10.7% in 2018 and 8.9% in 2019. In pregnancies obtained with AI-C, 17.8% resulted in miscarriage in 2018 and 16.3% in 2019. With the donor technique, 18.0% resulted in miscarriage in 2018 and 18.0% in 2019.

Conclusions. Despite a slight increase in the number of participating centres, a decrease is observed in the use of AI-C, but this trend does not occur with AI-D.