Obstetric anal sphincter injuries-Maternal, fetal and sociodemographic risk factors: A retrospective register-based study.

ABSTRACT:

Introduction

Obstetric anal sphincter injuries (OASIS) are severe complications to vaginal births with potentially serious long-term consequences and large impact on quality of life. The aim was to determine risk and protective factors for OASIS.

Material and methods

We performed a retrospective register-based observational study. A cohort of 988 988 singleton term deliveries 2005-2016 in Sweden were included. Data from the Swedish Medical Birth Registry and Statistics Sweden were extracted to identify cases of OASIS and maternal and fetal characteristics. Modified Poisson Regression analyses were performed to assess risk factors.

Results

The rate of OASIS was 3.5% (n = 34 583). Primiparity (adjusted risk ratio [aRR] 3.13, 95% CI 3.05-3.21), vacuum extraction (aRR 2.7

SUBMITTER: Andre K 

PROVIDER: S-EPMC9812064 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature