[Obstetric and neonatal outcomes in pregnancies conceived by assisted reproductive technology in an Argentine cohort]

Introduction: Since its introduction in clinical practice in 1981, pregnancies conceived by assisted reproductive techniques (ART) are an increasing proportion of all pregnancies, presenting particular challenges. Objective: To analyze the maternal-fetal outcomes of pregnancies conceived by ART in a single center in Argentina. Material and methods: Retrospective cohort of pregnancies conceived by ART who attended their delivery in a private university hospital through a review of records. Results: The incidence of composite primary maternal outcome was 40,1% (282/703), with hypertensive disease of pregnancy (21%) being the most frequent presenting pathology.In the multivariate analysis, age > 40 (OR 2,79; 95%CI: 1,82-4,26), chronic hypertension (OR 10,59; 95% CI: 2,81-39,86), twin pregnancy (OR 8,94; 95% CI: 5,39 – 14,80) and oocyte donation (OR 1,54; 95% CI: 1,04 – 2,27) were significantly associated with the maternal primary outcome. The incidence of the composite neonatal fetal primary outcome was 56,7% (468/824), with a prematurity rate of 34,5% (252/803). In the multivariate analysis of the composite outcome of the neonatal fetus, twin pregnancy (OR 7,08; 95% CI: 3,48 – 14,39) and other complications related to prematurity were statistically significantly associated with the composite outcome. Conclusions: Pregnancies conceived by ART show a significant increase in adverse maternal outcomes, mainly hypertension, and fetal and neonatal outcomes (prematurity, malformations, and admission to the intensive care unit).