[Pregnancy and delivery following insemination with frozen donor sperm]

A total of 620 pregnancies were followed and only 25 were lost to follow-up (3.8%). The mean age of the women was 30 years. 42% of them had had ovulation induction treatment. There were 538 primiparous women (86.7%). A control series of 130 primiparous women from the same age group was constituted at random. The abortion rate was 15%. 93% of pregnancies did not pose any problems in the 2nd and 3rd trimesters (83% in the control series). 97% of the women delivered at term (the same as in the control series). The mean birth weight was 3,260 g and the sex ratio was 0.97%. There was a high malformation rate of 1.48% and peri-natal mortality was 1.1%. The caesarian rate in the primiparous women was 31.9% compared with 19.2% in the control series and it was 35.5% in the multiparous women. In the Tours series, which is more homogeneous than our control series, the caesarian rate was essentially related to maternal age: 14.7% caesarian sections before the age of 30 and 30.5% over the age of 30. It seems therefore that AID does not constitute a risk factor for the pregnancy.