title: [Risk of obstetric anal sphincter injury in vaginal births could be reduced].
abstract: Obstetric anal sphincter injury (OASIS) is a well-known, serious complication of vaginal delivery that can have serious implications for women's subsequent health. The risk factors for OASIS included first vaginal delivery, high birthweight, prolonged second stage of birth, and operative vaginal deliveries. Manual perineum protection and use of mediolateral or lateral episiotomy decreased the risk of OASIS. However, in the order of 99-1000 women must be exposed to an episiotomy in vaginal deliveries, and 13-67 in operative vaginal deliveries to prevent a single OASIS. The results indicate the value of selective use of medio-lateral/lateral episiotomy in spontaneous vaginal iberal use of deliveries whereas more I it might be advisable in operative vaginal deliveries.
authors.affiliation: Savonia-ammattikorkeakoulu.
authors.forename: Sari
authors.initials: S
authors.lastname: Räisänen
authors.forename: Katariina
authors.initials: K
authors.lastname: Laine
authors.forename: Maija-Riitta
authors.initials: MR
authors.lastname: Jouhki
authors.forename: Katri
authors.initials: K
authors.lastname: Vehviläinen-Julkunen
authors.forename: Mika
authors.initials: M
authors.lastname: Gissler
authors.forename: Seppo
authors.initials: S
authors.lastname: Heinonen
mesh_terms: D000328:Adult; D001003:Anal Canal / Q000293:injuries* / Q000601:surgery*; D036861:Delivery, Obstetric / Q000379:methods*; D004841:Episiotomy / Q000379:methods*; D005260:Female; D006801:Humans; D007744:Obstetric Labor Complications / Q000517:prevention & control* / Q000601:surgery*; D011247:Pregnancy; D012307:Risk Factors; D014621:Vagina