Prevention of obstetric anal sphincter injuries with perineal support and lateral episiotomy: A historical cohort study.

Introduction: There are many risk factors for obstetric anal sphincter injury (OASIS) and the interaction between these risk factors is complex and understudied. The many observational studies that have shown a reduction of OASIS rates after implementation of perineal support have short follow-up time. We aimed to study the effect of integration of active perineal support and lateral episiotomy on OASIS rates over a 15-year period and to study interactions between risk factors known before delivery.

Maternal deaths in Norway 2005-2009.

Background: Norway has low maternal mortality, but such deaths are underreported even in high-income countries. Our goal was to identify the exact number of maternal deaths, the causes of death and the potential for improvement through medical care in Norway.

Material And Method: We traced maternal deaths in the period from 1 January 2005 to 31 December 2009 by linking the Medical Birth Registry and the Cause of Death Registry, supplemented with data from maternity clinics.

The overlap technique versus end-to-end approximation technique for primary repair of obstetric anal sphincter rupture: a randomized controlled study.

Objective: To compare the outcome of end-to-end approximation versus the overlap technique for primary repair of obstetric anal sphincter rupture (OASR) at 12 month follow-up.

Design: Prospective, randomized controlled study.

Setting: University hospital.