[Maternal and fetal morbidity in obese pregnant women]

To determine the maternal and fetal morbidity in obese pregnant women compared with non-obese pregnant women.

It was carried out a case-control study. There were included 342 patients who had a body mass index previous to the pregnancy of 18.5 to 24.9 (control group) and 342 pregnant women with body mass index > 30 (group of obese women). We registered the mother and newborns' data to evaluate their morbidity. The groups were compared with Student's t test or Mann Whitney's U test for continuous data and chi-square or Fisher exact test for categorical variables.

We found more macrosomic newborns in the group of obese women (p = 0.003) and a higher number of caesarean sections (48.8 vs 37.4%, p = 0.003). The maternal morbidity characterized by gestational diabetes was higher in the obese ones (3.5 vs 0.58%, p = 0.015). Other variables as preterm delivery, stillbirths, malformations, admissions to the neonatal intensive care unit, as well as the development of hypertensive disorders of pregnancy were not significant.

We found higher maternal and fetal morbidity in obese women. Therefore, these patients should be considered as carriers of high-risk pregnancies. This strategy could avoid complications associated to this group of patients.