Pre-Pregnancy BMI : A Part from The Book Chapter : Women and Pregnancies as an Immediate Target against the Obesity Epidemic

BMI

Considering crude results on a reproductive population, only women with a normal BMI (20-24.9 kg/m²) seem to achieve a “natural” equilibrium in the newborns’ SGA/LGA risk (both 10%). Very thin mothers have a higher risk of small for gestational age (SGA, until 25% of births) infants, and rarely give birth to a large for gestational age (LGA) infant. While morbidly obese women often give birth to LGA (until also 20-25% of births), and rarely to SGA. This equilibrium in the SGA/LGA risk (both 10%) is materialized geometrically by a crossing point: we proposed to call this crossing point the Maternal Fetal Corpulence symbiosis (MFCS). We have shown also that this MFCS point could exist in all women with an adequate gestational weight gain adapted to the maternal pre-pregnancy BMI. The optimal gestational weight gain (optGWG) to achieve this goal is a mathematical linear equation, y= ax+b: optGWG (kg) = -1.2 ppBMI (Kg/m²) + 42 ± 2kg. optGWG being optimal gestational weight gain. ppBMI being pre-pregnancy BMI.

Author(s) Details:

Pierre-Yves Robillard,
Service de Néonatologie, Centre Hospitalier Universitaire Sud Réunion, BP 350, 97448 Saint-Pierre Cedex, La Réunion, France and Centre d’Etudes Périnatales Océan Indien (CEPOI), Centre Hospitalier Universitaire Sud Réunion, BP 350, 97448 Saint-Pierre Cedex, La Réunion, France.

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