Cited by 141Maternal and fetal healthcarePregnancy and preeclampsia studiesCongenital Anomalies and Fetal Surgery

Incidence of and risk indicators for vasa praevia: a systematic review

Open access
Ruiter, L, Kok, N, Limpens, J, Derks, JB, de Graaf, IM, Mol, BWJ, Pajkrt, E·2016·BJOG: An International Journal of Obstetrics & Gynaecology

Abstract

Background: Vasa praevia (VP) is a rare phenomenon that is assumed to increase the risk of severe complications, including fetal death. Critical data on its incidence are lacking, so there is no rational basis for prenatal screening. Objectives: To review the literature on the incidence and risk indicators for VP. Search strategy: We searched OVID MEDLINE, OVID EMBASE, the Cochrane Library and PubMed for case–control and cohort studies on incidence and risk indicators for VP. Selection criteria: Two reviewers selected studies and scored their methodological quality. Data collection and analysis: We calculated the mean incidence of VP. We constructed 2 × 2 tables cross‐classifying potential risk indicators against the incidence of VP to calculate common odds ratios and 95% confidence intervals, using the Mantel–Haenszel method. Main results: We included 13 studies (two prospective cohort studies, ten retrospective cohort studies and one case–control study) reporting on 569 410 patients with 325 cases of VP. Based on ten included cohort studies providing information on the incidence, the mean incidence of VP was 0.60 per 1000 pregnancies. We identified five different risk indicators and markers for VP: second‐trimester placenta praevia, conception by assisted reproductive technologies, a bilobed or succenturiate placenta, umbilical cord insertion in the lower third part of the uterus at first‐trimester ultrasound and velamentous cord insertion. Almost 83% of the cases of VP had one or more risk indicators. Authors' conclusions: In view of the low incidence, screening for VP in an unselected population is not advised. Targeted screening of women with one or more risk indicators as a part of routine mid‐gestation scanning should be considered. Tweetable abstract: Vasa praevia is more common in placenta praevia, conception by ART, velamentous cord insertion and bilobed placenta.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1111/1471-0528.13829

Cites

34 of 34 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Risk factors for vasa previa include twin pregnancy, conception by assisted reproductive technology, a low-lying or bilobed placenta, succenturiate placental lobes and velamentous cord insertion.

    “Risk factors for vasa previa include twin pregnancy, conception by assisted reproductive technology, a low-lying or bilobed placenta, succenturiate placental lobes and velamentous cord insertion 95 .”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

2 of the 36 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. Oyelese KO, Turner M, Lees C, Campbell S. Vasa previa: an avoidable obstetric tragedy [Review] [58 refs]. Obstet Gynecol Surv 1999;54:138-45.
  2. Matsuoka R, Hasegawa J, Aoki H, Koide K, Ichizuka K, Sekizawa A, et al. 15 cases of vasa previa. J Perinat Med 2011;39, 2011; Conference: 10th World Congress of Perinatal Medicine 2011 Punta del Este Uruguay, 8-11 November 2011. Conference Publication.
  3. Derbala Y, Grochal F, Jeanty P. Vasa previa. J Prenat Med 2007;1:2-13.

Cited by

Sorted by citations

Authors
Ruiter, L., Kok, N., Limpens, J., Derks, J., de Graaf, I., Mol, B., & Pajkrt, E.
Affiliations
  • Amsterdam UMC Location University of Amsterdam (NL)
  • Vrije Universiteit Amsterdam (NL)
  • Department of Obstetrics and Gynaecology University Medical Centre Utrecht the Netherlands
  • Department of Obstetrics and Gynaecology Academic Medical Centre Amsterdam Amsterdam the Netherlands
  • The Robinson Institute School of Paediatrics and Reproductive Health University of Adelaide Adelaide SA Australia
Corresponding author
Ruiter, L
Venue
BJOG: An International Journal of Obstetrics & Gynaecology
Publisher
Wiley
Published
2015-12-23
Volume
123
Issue
8
Pages
1278-1287
ISSN
  • 0306-5456 (ISSN-L)
  • 1470-0328
  • 1471-0528
OpenAlex
W2203564449
Cited by
141
References
36
Citations by year
2026: 15 · 2025: 6 · 2024: 13 · 2023: 18 · 2022: 14 · 2021: 12 · 2020: 19 · 2019: 16 · 2018: 13 · 2017: 9 · 2016: 4 · 2014: 1
FWCI
1.32
Type
journal article
Language
en
Open access
Locations
  • BJOG An International Journal of Obstetrics & Gynaecology (publishedVersion)
  • PubMed (publishedVersion)
  • Amsterdam UMC (VU Amsterdam) - Institutional Repository (publishedVersion)
  • Pure Amsterdam UMC (submittedVersion, other-oa)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Utrecht University Repository (Utrecht University) (submittedVersion, other-oa)
  • Utrecht University Repository (Utrecht University) (submittedVersion)
Funders
Academic Medical Centre in Amsterdam
Topics
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Maternal and fetal healthcare
  • Health Sciences › Medicine › Obstetrics and Gynecology › Pregnancy and preeclampsia studies
  • Health Sciences › Medicine › Surgery › Congenital Anomalies and Fetal Surgery
Keywords
vasa previa, incidence, risk factors, placenta previa, assisted reproduction, velamentous cord insertion, umbilical cord insertion, prenatal screening, fetal death
MeSH terms
Female, Humans, Placenta, Placenta Previa, Pregnancy, Pregnancy Trimester, First, Pregnancy Trimester, Second, Risk, Umbilical Cord, Odds Ratio, Ultrasonography, Prenatal, Risk Assessment, Reproductive Techniques, Assisted, Vasa Previa

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review