title: Vasa previa: the impact of prenatal diagnosis on outcomes.
abstract: OBJECTIVE
  To evaluate outcomes and predictors of neonatal survival in pregnancies complicated by vasa previa and to compare outcomes in prenatally diagnosed cases of vasa previa with those not diagnosed prenatally.
  
  
  METHODS
  We performed a multicenter study of 155 pregnancies complicated by vasa previa. Cases were obtained from the Vasa Previa Foundation and 6 large hospitals. Comparisons were made between groups based on prenatal diagnosis status and neonatal survival.
  
  
  RESULTS
  The overall perinatal mortality was 36% (55 of 155). In 61 cases (39%), vasa previa was diagnosed prenatally; 59 of 61 (97%) infants from these pregnancies survived compared with 41 of 94 (44%) in cases not diagnosed prenatally (P <.001). Median 1- and 5-minute Apgar scores in cases diagnosed prenatally were 8 and 9, respectively, compared with 1 and 4 among survivors in cases not diagnosed prenatally (P <.001). More than half (24 of 41) of surviving neonates born to women without prenatal diagnosis required blood transfusions compared with 2 of 59 diagnosed prenatally (P <.001). Multivariable logistic regression analysis showed that the only significant predictors of neonatal survival were prenatal diagnosis (P <.001) and gestational age at delivery (P =.01).
  
  
  CONCLUSIONS
  Good outcomes with vasa previa depend primarily on prenatal diagnosis and cesarean delivery at 35 weeks of gestation or earlier should rupture of membranes, labor, or significant bleeding occur.
authors.affiliation: Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology, and Reproductive Sciences, UMDNJ-Robert Wood Johnson Medical School/Robert Wood Johnson University Hospital, New Brunswick, New Jersey 08901, USA. YinkaMD@aol.com
authors.forename: Yinka
authors.initials: Y
authors.lastname: Oyelese
authors.forename: Val
authors.initials: V
authors.lastname: Catanzarite
authors.forename: Federico
authors.initials: F
authors.lastname: Prefumo
authors.forename: Susan
authors.initials: S
authors.lastname: Lashley
authors.forename: Morey
authors.initials: M
authors.lastname: Schachter
authors.forename: Yosi
authors.initials: Y
authors.lastname: Tovbin
authors.forename: Victoria
authors.initials: V
authors.lastname: Goldstein
authors.forename: John C
authors.initials: JC
authors.lastname: Smulian
mesh_terms: D005260:Female; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007746:Labor Presentation; D015999:Multivariate Analysis; D011247:Pregnancy; D011256:Pregnancy Outcome; D011296:Prenatal Diagnosis; D011379:Prognosis; D014470:Umbilical Cord / Q000098:blood supply*