title: Perinatal Outcomes and the Influence of Maternal Characteristics After Roux-en-Y Gastric Bypass Surgery.
abstract: Assess the perinatal outcomes and identify what maternal characteristics can influence them in women who had undergone Roux-en-Y gastric bypass (RYGB).
  
  
  
  Analytical, prospective, and longitudinal study with pregnant adult women.
  
  
  
  chronological age >20 years; singleton pregnancy; RYGB surgery before pregnancy.
  
  
  
  prior malabsorptive or restrictive surgeries; malabsorption syndrome. Data analysis was performed using SPSS statistics software, version 17.
  
  
  
  Thirty pregnant women with 30.22 ± 4.38 years, the interval between surgery and the date of last menstrual period was 17.7 ± 9.07 months. The average prepregnancy body mass index was characterized as overweight (27.36 ± 3.26 kg/m2), total gestational weight gain was 7.68 ± 3.73 kg. The most common pregnancy complications were anemia (73.3%), urinary tract infection (33.4%), and dumping syndrome (33.4%). As for newborns, 58% were male, with a mean of 39.28 ± 0.84 weeks, 90% were classified as appropriate for gestational age, and 93.4% were born at term with adequate weight (39.28 ± 0.84 weeks and 3128.79 ± 271.49 g). Positive and significant correlation was observed between gestational weekly gain in the first trimester and birth weight (r = 0.42, p = 0.024) and between gestational weekly gain in the second trimester and birth weight (r = 0.48, p = 0.008).
  
  
  
  Despite the completion of RYGB, in general, there was no apparent fetal compromise when considering the analysis of the variables proposed by this study.
authors.affiliation: 1 Faculty of Medicine, Federal University of Rio de Janeiro , Rio de Janeiro, Brazil .|2 Micronutrient Research Group, Josué de Castro Institute of Nutrition, Federal University of Rio de Janeiro (NPqM, INJC/UFRJ) , Rio de Janeiro, Brazil .
authors.forename: Cristiane
authors.initials: C
authors.lastname: Chagas
authors.affiliation: 3 National School for Public Health, Oswaldo Cruz Foundation (ENSP/FIOCRUZ), Rio de Janeiro, Brazil.|4 Department of Nutrition and Diet, Josué de Castro Institute of Nutrition, Federal University of Rio de Janeiro , Rio de Janeiro, Brazil .|5 Research Group in Maternal and Child Health, Institute of Nutrition, Federal University of Rio de Janeiro , Rio de Janeiro, Brazil .
authors.forename: Cláudia
authors.initials: C
authors.lastname: Saunders
authors.affiliation: 1 Faculty of Medicine, Federal University of Rio de Janeiro , Rio de Janeiro, Brazil .|2 Micronutrient Research Group, Josué de Castro Institute of Nutrition, Federal University of Rio de Janeiro (NPqM, INJC/UFRJ) , Rio de Janeiro, Brazil .|6 Clínica Cirúrgica Carlos Saboya, Rio de Janeiro, Brazil .
authors.forename: Silvia
authors.initials: S
authors.lastname: Pereira
authors.affiliation: 2 Micronutrient Research Group, Josué de Castro Institute of Nutrition, Federal University of Rio de Janeiro (NPqM, INJC/UFRJ) , Rio de Janeiro, Brazil .|7 Graduate Program in Nutrition, Josué de Castro Institute of Nutrition, Federal University of Rio de Janeiro , Rio de Janeiro, Brazil .
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Silva
authors.affiliation: 2 Micronutrient Research Group, Josué de Castro Institute of Nutrition, Federal University of Rio de Janeiro (NPqM, INJC/UFRJ) , Rio de Janeiro, Brazil .|6 Clínica Cirúrgica Carlos Saboya, Rio de Janeiro, Brazil .|8 UNIFESP, São Paulo, Brazil .|9 Brazilian Society for Bariatric and Metabolic Surgery, Rio de Janeiro, Brazil .
authors.forename: Carlos
authors.initials: C
authors.lastname: Saboya
authors.affiliation: 2 Micronutrient Research Group, Josué de Castro Institute of Nutrition, Federal University of Rio de Janeiro (NPqM, INJC/UFRJ) , Rio de Janeiro, Brazil .|3 National School for Public Health, Oswaldo Cruz Foundation (ENSP/FIOCRUZ), Rio de Janeiro, Brazil.|10 Department of Social and Applied Nutrition, Institute of Nutrition, Federal University of Rio de Janeiro , Rio de Janeiro, Brazil .
authors.forename: Andréa
authors.initials: A
authors.lastname: Ramalho
mesh_terms: D000328:Adult; D000740:Anemia / Q000453:epidemiology*; D001724:Birth Weight; D015992:Body Mass Index; D001938:Brazil; D004377:Dumping Syndrome / Q000453:epidemiology*; D005260:Female; D015390:Gastric Bypass / Q000009:adverse effects*; D005865:Gestational Age; D006801:Humans; D008137:Longitudinal Studies; D009752:Nutritional Status; D009767:Obesity, Morbid / Q000601:surgery; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology*; D011446:Prospective Studies; D014552:Urinary Tract Infections / Q000453:epidemiology*
keywords: Roux-en-Y gastric bypass (RYGB); maternal anthropometry; perinatal outcome; pregnancy