%0 Journal Article %T Efecto de la ganancia de peso gestacional en la madre y el neonato %A Zonana-Nacach %A Abraham %A Baldenebro-Preciado %A Rogelio %A Ruiz-Dorado %A Marco Antonio %J Salud P¨²blica de M¨¦xico %D 2010 %I Instituto Nacional de Salud P¨²blica %R 10.1590/S0036-36342010000300006 %X objective: to evaluate the effects of gestational weight gain (gwg) on maternal and neonatal outcomes. materials and methods: during 2009, women in the immediate puerperium were assessed at the gynecology and obstetrics hospital in tijuana, baja california, mexico. gwg was considered optimal when < 18 kg, < 16 kg, < 11.5 kg and <9 kg for women who, before pregnancy, were underweight, normal weight, overweight and obese, respectively. results: a total of 38% of women gained more than the recommended weight during pregnancy women with normal weight previous to pregnancy who exceeded gestational weight-gain recommendations had a risk of oligo/polyhydramnios (or 2.1, ci 95% 1.04-4.2) and cesarean delivery; overweight women previous to pregnancy had an increased risk of preeclampsia (or 2.2 ci 95% i.i-4.6) and newborn macrosomia (or 2.5, ci 95% 1.1-5.6); and obese women had a risk of newborn macrosom¨ªa (or 6.6 ic 95% i.8-23). pre-pregnancy weight was more greatly associated with gestational diabetes than gestational weight gain. conclusions: women whose weight gain during pregnancy is outside of the recommended ranges had an increased risk of adverse obstetric and neonatal outcomes. %K pregnancy %K body weight changes %K pregnancy complications %K gestational weight gain. %U http://www.scielosp.org/scielo.php?script=sci_abstract&pid=S0036-36342010000300006&lng=en&nrm=iso&tlng=en