Patient Information Leaflet
PAS NETWORK - WHO ARE WE?
We are a team that comprises of specialist clinicians with expertise in delivering care for patients with PAS.
4 Specialist Centres covering the West Midlands that provide specialist care for PAS. The 4 centres are:
- Birmingham Women’s Hospital
- University Hospital Of North Midlands
- Birmingham Heartlands Hospital
- Royal Wolverhampton Hospital
Our aim is to provide safe, specialised care with a standardised approach across the region.
WHAT IS PLACENTA ACCRETA SPECTRUM?
Placenta accreta spectrum disorder (PAS) is a pregnancy condition in which the placenta attaches too deeply into the wall of the womb (uterus). It is sometimes called abnormally invasive placenta (AIP).
The placenta connects the baby to the mother’s blood supply, giving oxygen and nourishment. It usually separates from the womb after birth, and is delivered after the baby. PAS makes this separation more difficult and can result in significant bleeding if an attempt is made to remove the placenta.
Cases of PAS disorder are grouped into three categories, based on the extent of the placenta’s invasion into or through the womb.
WHY HAVE YOU BEEN REFFERED TO A SPECIALIST UNIT?
Some patients may be at higher risk of developing PAS. Previous caesarean section delivery, IVF or any other prior uterine surgery can increase your risk. PAS is most commonly found in patients with placenta praevia, where the placenta covers part or all of the opening of the womb, and who have previously had a caesarean birth.
All women who have an anterior low-lying placenta (implanted at the front of their womb) and who have also had a previous caesarean delivery should have a scan by a specialist who has expertise in diagnosing PAS, to ensure they are diagnosed before delivery.
You may also be referred if your consultant is unsure and would like a specialist opinion.
NEXT STEPS
Upon referral to one of our four specialist units, you will receive communication for an appointment with them. You are most likely to be seen at 28 weeks but this may be sooner if you have any bleeding or other considerations.
Please ensure your bladder is full for the scan.
PAS may be diagnosed by an ultrasound scan during your pregnancy. Additional tests such as MRI scans may help with the diagnosis, but your doctor will only be able to tell for sure at delivery.
If PAS is suspected before your baby is born, there will be a plan put in place for you to deliver your baby at the specialist unit, with a multi-disciplinary team who have expertise in managing the condition.
Please note that it is very unlikely that you have PAS because it is very rare but it is important that we rule it out
USEFUL RESOURCES & SUPPORT GROUPS
· www.rcog.org.uk/en/patients/patient-leaflets/placenta-praevia
· www.facebook.com/groups/placentaaccretaUK