digplanet beta 1: Athena
Share digplanet:


Applied sciences






















Vasa praevia
Classification and external resources
Vasa praevia
ICD-10 O69.4
ICD-9 663.5
DiseasesDB 13743
eMedicine med/3276

Vasa praevia (vasa previa AE) is an obstetric complication in which fetal blood vessels cross or run in close proximity to the external orifice of the uterus. These vessels are at risk of rupture when the supporting membranes rupture, as they are unsupported by the umbilical cord or placental tissue.[1]


Vasa previa is present when fetal vessels traverse the fetal membranes over the internal cervical os. These vessels may be from either a velamentous insertion of the umbilical cord or may be joining an accessory (succenturiate) placental lobe to the main disk of the placenta. If these fetal vessels rupture the bleeding is from the fetoplacental circulation, and fetal exsanguination will rapidly occur, leading to fetal death.

Risk Factors[edit]

Vasa previa is seen more commonly with velamentous insertion of the umbilical cord, accessory placental lobes (succenturiate or bilobate placenta), multiple gestation, IVF pregnancy. In IVF pregnancies incidences as high as one in 300 have been reported.The reasons for this association are not clear, but disturbed orientation of the blastocyst at implantation, vanishing embryos and the increased frequency of placental morphological variations in in vitro fertilisation pregnancies have all been postulated [2]


  • The classic triad of the vasa praevia is: membrane rupture, painless vaginal bleeding and fetal bradycardia.
  • This is rarely confirmed before delivery but may be suspected when antenatal sono-gram with color-flow Doppler reveals a vessel crossing the membranes over the internal cervical os.[3][4]
  • The diagnosis is usually confirmed after delivery on examination of the placenta and fetal membranes[citation needed].


Immediate treatment with an emergency caesarean delivery is usually indicated.[5][6]

See also[edit]


  1. ^ Yasmine Derbala, MD; Frantisek Grochal, MD; Philippe Jeanty, MD, PhD (2007). "Vasa previa". Journal of Prenatal Medicine 2007 1 (1): 2–13. Full text
  2. ^ http://www.rcog.org.uk/files/rcog-corp/GTG27PlacentaPraeviaJanuary2011.pdf
  3. ^ Lijoi A, Brady J (2003). "Vasa previa diagnosis and management.". J Am Board Fam Pract 16 (6): 543–8. doi:10.3122/jabfm.16.6.543. PMID 14963081. Full text
  4. ^ Lee W, Lee V, Kirk J, Sloan C, Smith R, Comstock C (2000). "Vasa previa: prenatal diagnosis, natural evolution, and clinical outcome.". Obstet Gynecol 95 (4): 572–6. doi:10.1016/S0029-7844(99)00600-6. PMID 10725492. 
  5. ^ Bhide A, Thilaganathan B (2004). "Recent advances in the management of placenta previa.". Curr Opin Obstet Gynecol 16 (6): 447–51. doi:10.1097/00001703-200412000-00002. PMID 15534438. 
  6. ^ Oyelese Y, Smulian J (2006). "Placenta previa, placenta accreta, and vasa previa.". Obstet Gynecol 107 (4): 927–41. doi:10.1097/01.AOG.0000207559.15715.98. PMID 16582134. 

External links[edit]

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Vasa_praevia — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
921 videos foundNext > 

vasa praevia

vaisseau courant sur les membranes.

VASA PRAEVIA raising awareness

A short series of facts and questions about the deadly obstetric condition VASA PRAEVIA.

VASA PRAEVIA - Philippe Jeanty MD, PhD

Part 1 of 4 of a live video recording of Dr. Philippe Jeanty presenting a definitive educational lecture to the Fetal Medicine Foundation's 6th World Congres...

Vasa Praevia E-Petition & Awareness Interview - BBC Spotlight

Interview with Niki Cunningham regarding the loss of her baby, Harry, after he suffered a bleed from his umbilical cord during labour. This condition is call...


Prepare for USMLE,UK,CANADIAN,AUSTRALIAN, NURSING & OTHER MEDICAL BOARD examinations around the globe with us. Understand the basics, concepts and how to ans...

Vasa Praevia Small

Ask The PM - Vasa Praevia

10 September 2008.

Vasa Previa { AWARENESS }

This is my grandson Connor ,he was born May 9th and passed away May 12th Due to Vasa Previa.He weighed 8lbs and 24oz .Vasa previa is present when fetal vesse...

vasa praevia

Umbilical artery between presenting fetal head and internal os of the cervical canal at 20 weeks of gestation - Ultrasound image by (ecografia di ) Dr. Wolfg...

VASA PRAEVIA - Philippe Jeanty MD, PhD (4/4)

Part 4 of 4 of a live video recording of Dr. Philippe Jeanty presenting a definitive educational lecture to the Fetal Medicine Foundation's 6th World Congres...

921 videos foundNext > 

39 news items

RTL Online
Tue, 16 Dec 2014 07:33:45 -0800

Ärzte diagnostizierten bei Stacey Vasa Praevia: Eine Schwangerschaftskomplikation, bei der das Baby Gefahr läuft, durch das Platzen eines Blutgefäßes nicht mehr versorgt werden zu können. Um die Risiken so niedrig wie möglich zu halten, war Stacey ab ...

BBC News

BBC News
Sat, 15 Mar 2014 09:30:00 -0700

A post mortem examination revealed the cause of death was vasa praevia - a rare condition that affects one in about 2,500 births in the UK. The condition affects 555 babies a year in the UK. Charity Vasa Praevia Raising Awareness says that the survival ...

Wigan Today

Wigan Today
Sat, 29 Nov 2014 01:56:15 -0800

The former Hear'Say singer was also a special guest at a ball in Exeter for The Harry Cunningham Trust, created in honour of Harry who died in 2012, aged 26 weeks of vasa praevia - a fatal condition which affects premature babies. Since Kym lost her ...

Western Morning News

Western Morning News
Sat, 29 Nov 2014 13:34:59 -0800

It's depressing enough that celebrities had to be paid a fee at all to support a fundraiser for the Harry Cunningham Trust, a charity set up by Niki Cunningham to raise awareness of a rare pregnancy complication called vasa praevia which killed her son ...


Fri, 21 Nov 2014 00:07:00 -0800

The Made In Chelsea stars were booked for a black-tie event in Exeter by charity founder Niki Cunningham whose son died at just one day old after suffering vasa praevia, a condition which causes blood cells to grow abnormally. She hoped they would help ...
Sky News
Thu, 22 Nov 2012 18:22:31 -0800

The condition is called vasa praevia. Blood vessels in the placenta grow abnormally and can rupture when a woman's waters break or the baby starts to move down the birth canal. At least one baby is affected by the condition every day in the UK. Women ...
Daily Mail
Mon, 19 Nov 2012 14:50:00 -0800

In vasa praevia, either the umbilical cord does not grow into the middle of the placenta as it should, but attaches around the edge of the placenta, leaving the blood vessels exposed; or the placenta develops in two parts and the blood vessels grow to ...

Bristol Post

Bristol Post
Fri, 03 Oct 2014 00:41:15 -0700

Sapphire suffered from a condition which affects blood flow between the placenta and foetus called vasa praevia. This illness kills around 95 per cent of the 555 babies born with it every year. The mother-of-five is calling for a routine scan to be ...

Oops, we seem to be having trouble contacting Twitter

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!

Searchlight Group

Digplanet also receives support from Searchlight Group. Visit Searchlight