BACKGROUND: The rate of obstetric anal sphincter injury has increased in recent years,
particularly among operative vaginal deliveries. We sought to characterize temporal trends …

Objectives To estimate the independent association of episiotomy with obstetric anal
sphincter injuries (OASIS) using first a cross-sectional and then a matched pair analysis …

Episiotomy use has decreased due to the lack of evidence on its protective effects from
maternal obstetric anal sphincter injuries. Indications for episiotomy vary considerably and …

Objective The purpose of this study was to describe associations between episiotomy at the
time of forceps or vacuum-assisted delivery and obstetrical anal sphincter injuries (OASIS) …

Purpose Our main objective was to investigate whether the implementation of a restrictive
episiotomy policy in operative deliveries changes the incidence of obstetric anal sphincter …

Background In view of the reported increase in obstetric anal sphincter injuries, the objective
of this study was to evaluate the incidence of such injuries over time and the associated risk …

Objective To evaluate the maternal and neonatal morbidity of operative vaginal delivery in
relation to the use of episiotomy. Design Prospective cohort study. Setting Two urban …

OBJECTIVE: To evaluate whether there is a shift in the episiotomy target group from women
at low risk to those at high risk of obstetric anal sphincter injuries, concomitant with a …

OBJECTIVE: To determine whether restrictive episiotomy use was associated with
decreases in anal sphincter lacerations and the risk of anal sphincter laceration attributable …

OBJECTIVE: We sought to determine whether an optimal level of lateral episiotomy use can
be found by assessing the correlation between the hospital-based variations in episiotomy …