OBESIDAD PREGESTACIONAL Y RIESGO DE INTOLERANCIA A LA GLUCOSA EN EL EMBARAZO Y DIABETES GESTACIONAL

background: obesity in women in reproductive age is becoming more frequent and it self complicates preg-nancy increasing the risk of diseases such as gestational diabetes mellitus (gdm). aims: to determine the risk of gestational diabetes mellitus (gdm) and impaired glucose tolerance (igt) according to the pregestational body mass index (pgbmi). methods: sample of 489 patients, they were classified by pgbmi and underwent an oral glucose tolerance test (ogtt) with 100 g of glucose during 120 minutes. gdm was defined with two altered valúes in the ogtt and igt with a single altered value. a chi-square test was applied to determine difference between groups, and we obtained an odds ratio (or), with a confidence level of 95%. results: 9 patients were low weight, 194 normal weight, 158 overweight and 128 obese, average gestational age 31.3 ± 5.6 weeks. 13% of the patients had gdm, 10.6% had igt. overweight women had an or of 3.81 of developing igt (95% cl 1.62-8.95) and an or of 3.7 of developing gdm (95% cl 1.65-8.38), while women with prepregnancy obesity showed an or of 6.6 of developing itg (95% cl 2.83-15.66) and an or of 8.8 of developing gdm (95% cl 4.05-19.51), all compared to women with prepregnancy normal weight. conclusions: mexican population has a higher risk of gdm than other populations and also a higher prevalence of overweight and obesity, so that every pregnant woman should be screening for gdm, has a diagnosis and receive treatment, preventing complications and type 2 diabetes.