title: [Placenta praevia/accreta and previous cesarean section. Experience of five years at the Mexico National Institute of Perinatalogy].
abstract: Two hundred and ten cases with placenta previa, were reviewed (1989-1994). In 37 (17.6%) placenta accreta was present. From accretism cases in 26 (70.2%) only, there was the antecedent of cesarean section. Average age was 31 years; the highest risk group was 35-39 years with 26% of cases of accretism. Average parity was three, in the group of five gestaes, 33.3% developed placenta accreta. In the group without antecedent of cesarean section, accretism risk was 9.4%; with one section was 21.1%, but with two or more cesarean sections, it was 50%. In the presence of placenta previa advanced maternal age, and two or more cesarean sections, placenta accreta risk is high.
authors.affiliation: Clínica de Alto Riesgo, Instituto Nacional de Perinatología, México, D.F.
authors.forename: J
authors.initials: J
authors.lastname: Lira Plascencia
authors.forename: F
authors.initials: F
authors.lastname: Ibargüengoitia Ochoa
authors.forename: M
authors.initials: M
authors.lastname: Argueta Zúñiga
authors.forename: S
authors.initials: S
authors.lastname: Karchmer
mesh_terms: D000328:Adult; D002585:Cesarean Section / Q000009:adverse effects / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008423:Maternal Age; D008800:Mexico / Q000453:epidemiology; D010298:Parity; D010921:Placenta Accreta / Q000453:epidemiology*; D010923:Placenta Previa / Q000453:epidemiology*; D011247:Pregnancy; D012189:Retrospective Studies; D012307:Risk Factors
vernacular_title: Placenta previa/acreta y cesárea previa. Experiencia de cinco años enel Instituto Nacional de Perinatología.