title: Factors associated with vaginal birth after cesarean in a maternity hospital of Rio de Janeiro.
abstract: OBJECTIVE
  Identifying characteristics associated with vaginal birth after cesarean.
  
  
  METHODS
  Case-control study based on medical records.
  
  
  METHODS
  women with previous cesarean, who had delivered in a public Rio de Janeiro maternity hospital between 1992 and 1996.
  
  
  METHODS
  141 cases (vaginal births after cesarean) and 304 controls (a new cesarean after other(s)). Multivariate analysis with logistic regression was carried out.
  
  
  RESULTS
  The following characteristics were associated with greater probability of vaginal birth (IC=95%): only one previous cesarean (OR=19.05; IC=6.88-52.76); cervical dilatation at admission above 3 cm (OR=8.86; IC=4.93-15.94); gestational age below 37 weeks (OR=3.01; IC=1.40-6.46); history of at least one previous vaginal birth (OR=2.12; IC=1.18-3.82); level of education below high school (OR=1.94; IC=1.02-3.69). Chronic hypertension reduced the chances of vaginal birth (OR=0.44; IC=0.22-0.88).
  
  
  CONCLUSIONS
  Among the factors that can be modified to reduce the number of repeated cesareans are: trial of labor promotion, reducing admission of women at early stages of labor and adequate hypertension management during pregnancy.
  
  
  CONCLUSIONS
  Among the factors that can be modified to reduce the number of repeated cesareans are: the trial of labor promotion for women who present previous cesarean, reducing admission of women at early stages of labor and adequate hypertension management during pregnancy.
authors.affiliation: Rua Liberato Carioni 406, Lagoa da Conceição CEP 88062220, SC, Florianópolis, Brazil. edorsi@uol.com.br
authors.forename: E
authors.initials: E
authors.lastname: d'Orsi
authors.forename: D
authors.initials: D
authors.lastname: Chor
authors.forename: K
authors.initials: K
authors.lastname: Giffin
authors.forename: G P
authors.initials: GP
authors.lastname: Barbosa
authors.forename: A J
authors.initials: AJ
authors.lastname: Angulo-Tuesta
authors.forename: A S
authors.initials: AS
authors.lastname: Gama
authors.forename: L G
authors.initials: LG
authors.lastname: Pessoa
authors.forename: T
authors.initials: T
authors.lastname: Shiraiwa
authors.forename: M J
authors.initials: MJ
authors.lastname: Fonseca
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil; D016022:Case-Control Studies; D004522:Educational Status; D005260:Female; D005865:Gestational Age; D006771:Hospitals, Maternity; D006801:Humans; D006973:Hypertension / Q000150:complications; D007747:Labor Stage, First; D016015:Logistic Models; D011247:Pregnancy; D011248:Pregnancy Complications; D011249:Pregnancy Complications, Cardiovascular; D011253:Pregnancy in Adolescence; D014219:Trial of Labor; D016064:Vaginal Birth after Cesarean / Q000706:statistics & numerical data*