Gestational weight gain as predicted by pregestational body mass index and gestational age in Mexican women.
OBJECTIVE
To develop a reference pattern to evaluate gestational weight according to pregestational body mass index (BMI) and gestational age, using current longitudinal information from healthy pregnant women.


METHODS
We followed 438 women with singleton pregnancies between weeks 16 and 36 of pregnancy Women were excluded if they developed pathologic conditions during gestation, delivered malformed or dead fetuses, or delivered babies with a birthweight of less than 2500 or more than 4200 g or with a gestational age of less than 37 or more than 41 weeks. Weight, biochemical indicators, and clinical indicators were recorded every 4 weeks throughout the pregnancy. Data were analyzed by sequential regressions.


RESULTS
Four equations for maternal predicted weight across categories of pregestational BMI (underweight, normal, overweight, and obese) and gestational ages were developed and synthesized in a table of reference values.


CONCLUSIONS
Optimal weight and weight gain during pregnancy can be estimated with our equations, which are corrected for pregestational BMI and gestational age.
Casanueva
Esther
E
Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Public Health Research Branch, Mexico.
Flores-Quijano
María Eugenia
ME
Roselló-Soberón
María Emila
ME
De-Regil
Luz María
LM
Sámano
Reyna
R
D000293:Adolescent; D000328:Adult; D001724:Birth Weight / Q000502:physiology; D001827:Body Height / Q000502:physiology; D015992:Body Mass Index; D001835:Body Weight / Q000502:physiology; D002648:Child; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D008800:Mexico; D011237:Predictive Value of Tests; D011247:Pregnancy; D012016:Reference Values; D015430:Weight Gain / Q000502:physiology*; D055815:Young Adult