Obstetric anal sphincter injuries before and after the introduction of the Episcissors-60: A multi-centre time series analysis.

Objective: To investigate the impact of the Episcissors-60 on obstetric anal sphincter injury (OASI) rates.

Study Design: Observational multi-centre time series analysis at four maternity units in the North-East of England. The main outcome measures were obstetric anal sphincter injury rates and delivery blood loss.