Aust N Z J Obstet Gynaecol
February 2013
Aims: Investigate risk factors for obstetric anal sphincter injury (OASI) and their incidence between 2006 and 2010 at a regional teaching hospital in Australia. Determine whether a correlation exists between a decrease in OASI rates and an increase in mediolateral episiotomies.
Materials And Methods: A retrospective observational study conducted at the Geelong Hospital, Barwon Health, Victoria, Australia.