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Low-lying placenta after 20 weeks (placenta praevia)

Published: 22/12/2011

This information will help you if you have, or have been told you may have, a low-lying placenta (placenta praevia) after 20 weeks of pregnancy. It includes:

  • An explanation of what placenta praevia is and how it develops
  • The risks to you and your baby
  • How placenta praevia is diagnosed
  • What extra antenatal care you can expect if you have a low-lying placenta
  • What will happen when you give birth

This patient information leaflet was developed by the RCOG Patient Information Committee. It's based on the RCOG clinical guideline Placenta Praevia, Placenta Praevia Accreta and Vasa Praevia: Diagnosis and Management, which includes a full list of the sources of evidence we used.

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