Antenatal Assessment Units

Sometimes we need to undertake further investigations or monitoring and will ask you to attend an Antenatal Assessment Unit (AAU), either at Saint Mary's Hospital or at our satellite site in Salford. These units are staffed by experienced midwives. If you are asked to attend an assessment unit, please attend promptly and be aware that the assessment can take several hours.
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The midwives working on AAU provide care in a relaxed environment and are able to provide additional monitoring if needed. They work closely with the obstetric team to allow you to receive care without admission to a hospital ward.

There are two Antenatal Assessment Units (AAUs):

Saint Mary’s Hospital (Oxford Road Campus):

Maternity Assessment Unit

Opening hours: 8.00 am – 8.00 pm, Monday to Sunday

Ward 64, 2nd Floor

Saint Mary’s Hospital

Oxford Road

Manchester  M13 9WL

Telephone (0161) 276 6404


Salford Maternity Day Unit:

Opening hours: 8.00 am – 5.00 pm, Monday to Friday.

Ground floor

Brook Building Orange area

Salford Royal Infirmary,

Stott Lane

Salford M6 8HD

Telephone (0161) 206 5291 or (0161) 206 5293


Occasionally we may need to transfer you from Salford Saint Mary’s for further specialist care.

The sort of problems in pregnancy that might be monitored by the antenatal assessment units include:

  • Reduced fetal movements.
  • Obstetric Cholestasis.
  • High blood pressure monitoring.
  • Management of prolonged rupture of membranes.
  • External cephalic versions (turning of breech babies).
  • Intravenous iron infusions for management of serious anaemia.
  • Postnatal reviews.