Vasa Previa: Prenatal Diagnosis, Natural Evolution, and Clinical Outcome

  title={Vasa Previa: Prenatal Diagnosis, Natural Evolution, and Clinical Outcome},
  author={Wesley Lee and V. L. Lee and Janet S. Kirk and Christopher T. Sloan and Ramada S. Smith and Christine H. Comstock},
  journal={Obstetrics \& Gynecology},

Figures from this paper

Prenatal diagnosis and management of vasa previa in twin pregnancies: a case series and systematic review

A case of vasa previa diagnosed prenatally, and review of the literature

In this report, a case of vasa previa diagnosed prenatally is presented and it should be considered that placenta previa (including low-lying placentA), bilobed Placenta, and umbilical cord insertion in the lower uterine segment are associated with high risk of vsa previa.

Vasa previa: diagnosis and management.

Most current recommendations for current identification and management of vasa previa in this series of geographically diverse mostly private practice maternal fetal medicine practices are confirmed, with recent reports that show a dramatic improvement in neonatal survival and complications compared with earlier reports.

Introducing a case of fetal growth disorder with vasa previa

A case report of pregnancy with a velamentous variate cord that prevented the subsequent tragic events by early diagnosis and timely cesarean section and IUGR and fetal growth retardation can be associated with placental disorders.

Vasa Previa: Clinical Presentations, Outcomes, and Implications for Management

Transvaginal ultrasound scans of at-risk patients can identify most cases of vasa previa, and preterm bleeding does not usually require immediate delivery.

Frequency of spontaneous resolution of vasa previa with advancing gestational age.

Vasa praevia: A missed diagnosis

Summary Vasa praevia is an uncommon obstetric complication, which if undiagnosed is associated with a high fetal mortality because of the rapid haemorrhage from tearing of fetal vessels resulting in

Vasa Previa: The Impact of Prenatal Diagnosis on Outcomes

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.

Early sonographic detection of a succenturiate placenta after IVF in a 42-year-old woman with multiple comorbidities

A case of a 42-year-old woman with a pregnancy resulting from in vitro fertilisation and a medical history including two spontaneous abortions, hypercoagulable state and other comorbidities, who is diagnosed with a low-lying posterior placental lobe.




This is the first case report of vasa previa not associated with a succenturiate lobe or bilobate placenta and in which the diagnosis was made using a combination of transvaginal ultrasonography and color flow Doppler ultrasound.

The Antenatal Diagnosis of Vasa Praevia: The Role of Ultrasound

  • V. Hurley
  • Medicine
    The Australian & New Zealand journal of obstetrics & gynaecology
  • 1988
Three case reports of pregnancies complicated by vasa praevia which occurred at the Mercy Maternity Hospital over a 12-month period are presented illustrating both the potential and the limitations of B Mode ultrasound in diagnosing this condition.

Placental cord insertion visualization with prenatal ultrasonography.

Evidence is provided that ultrasonography (either gray scale or color Doppler) is useful in identifying normal, marginal, and velamentous cord insertion and that marginal cord insertion may evolve into velamentOUS cord insertion as pregnancy progresses.

A strategy for reducing the mortality rate from vasa previa using transvaginal sonography with color Doppler

Judicious use of TVS and color Doppler in women considered at risk of vasa previa in women with low‐lying placentas may help to reduce the mortality from this condition.

Separated chorioamnion and elevated chorion: sonographic features and clinical significance.

Follow‐up sonographic examination of patients with separated chorioamnion and elevated chorion revealed that most (11 of 13), but not all pregnancies in which an intrauterine membrane was found progressed to term without complications.

Antenatal diagnosis of vasa previa by color‐flow mapping.

The use of colorflow mapping for antenatal diagnosis of vasa previa is described and recommendations for situations in which color-flow mapping is helpful in antennatal diagnosis of this rare but dangerous obstetric entity are made.

Vasa previa: Prenatal diagnosis by transperineal sonography with Doppler evaluation

It is shown that transperineal sonography with Doppler evaluation can successfully establish the diagnosis of vasa previa prenatally and is of critical importance because of the high fetal mortality rate in unrecognized cases.

Vasa previa: prenatal diagnosis with transvaginal color Doppler flow imaging.

Diagnosis of vasa previa with ultrasonography.

An antepartum diagnosis of vasa previa was considered in a patient in whom ultrasound revealed pulsatile loops of cord overlying the cervical os. This diagnosis was confirmed at the time of cesarean

Poor perinatal outcome associated with vasa previa: is it preventable? A report of three cases and review of the literature

  • T. FungT. Lau
  • Medicine
    Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology
  • 1998
Antenatal diagnosis was significantly associated with decreased fetal mortality and a low‐lying placenta is a risk factor for vasa previa, as it occurred in 81% of patients.