n Obstetrics and Gynaecology Forum - Management of Obstetric Anal Sphincter Injuries (OASIS) : review

Volume 19, Issue 1
  • ISSN : 1027-9148



Obstetric Anal Sphincter Injuries (OASIS) are major contributory factors to the development of anal incontinence that may go unreported due to embarrassment. Anal incontinence can have a devastating effect on a woman's physical, social and emotional well-being. There is now undisputed evidence that OASIS are being missed at delivery but even when they are diagnosed and repaired about 40% of women suffer persistent anal incontinence. It is therefore paramount that midwives and doctors receive intensive focused training on the identification and repair of OASIS. Every woman who has a vaginal delivery must have a careful vaginal and rectal examination to exclude OASIS. A structured protocol of repair should be followed and special heed should be given to the recognition and repair of the internal anal sphincter. All women should be followed up and counselled regarding the mode of delivery in a subsequent pregnancy.

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