[Is low pre-pregnancy body mass index a risk factor for preterm birth and low neonatal birth weight?]. / Niski BMI przed zajsciem w ciaze: czy jest czynnikiem ryzyka porodów przedwczesnych i niskiej masy urodzeniowej noworodków?

ABSTRACT

OBJECTIVES: A pregnant woman's weight is an extremely important factor in the course of pregnancy and delivery. Not only obesity but also being underweight may lead to complications in pregnancy such as preterm delivery and low neonatal birth weight. DESIGN: The aim of this study was to analyze the relationship between a low BMI and outcome of pregnancy, birth weight and general well being of the neonates. MATERIAL AND METHODS: 415 patients who were hospitalized in the Department of Obstetrics and Reproduction Wroclaw Medical University between 1996-2005 was done. The patients were divided into 3 groups I--Underweight (BMI <19,8), II--Appropriate weight (BMI 19,8-26,0) and III--Overweight (BMI>26,0). RESULTS: The frequency of preterm deliveries as well as low neonatal birth weight <2500g, in underweight mothers was higher than in other groups. CONCLUSIONS: Low pre-pregnancy BMI is an important factor risk factor in preterm deliveries. There was no correlation between BMI and the general well being of the neonates.