TEMPORAL TRENDS IN EPISIOTOMY USE AMONG SPONTANEOUS AND OPERATIVE VAGINAL DELIVERIES IN CANADA AND THE ASSOCIATION WITH OBSTETRIC ANAL SPHINCTER INJURY

Objectives To quantify, firstly, temporal trends in episiotomy use among spontaneous vaginal deliveries (SVDs) and operative vaginal deliveries (OVDs) in Canada, and secondly, the associations between episiotomy and obstetric anal sphincter injury (OASI) among SVDs and OVDs. Methods Population-based, retrospective, cohort study of all singleton, term deliveries in Canada (2004-2014) using hospitalization data. Temporal trends in episiotomy use …