Factors that influence patient preference for mode of delivery following an obstetric anal sphincter injury

Purpose: A common indication for elective caesarean is previous obstetric anal sphincter injury (OASI). This study aims to identify factors that influence womens' preferences regarding mode of delivery (MoD) in a subsequent pregnancy following an OASI. Methods: 100 consecutive women who sustained an OASI completed a questionnaire when attending postnatal follow up at a perineal trauma clinic. They also completed ePAQ-PF to assess pelvic floor symptoms. Data was collated and percentages generated for each response. A chi-squared calculation was used for preferred MoD. Results: In total, 75 women were Primiparous and 25 Multiparous. 20% of women were advised to have a caesarean, with the remainder advised either a vaginal delivery or further investigations. 79% of women had a 3a/3b tear and 21% of women had a 3c/4th degree OASI. Based on women's preferences, those who sustained a 3c/4th degree tear were more likely to opt for CS than a 3a/b degree tear (p <0.001). Bowel symptoms per se did not correlate with choice of MoD in either group. In women with 3c/4th OASI vaginal or sexual symptoms did not impact on the decision regarding choice of delivery but in women who sustained a 3a/b tear the impact on sexual function appears to be the commonest symptom in those who wished a caesarean section. Conclusion: Women with 3c/4th OASI are more likely to accept a planned CS. Bowel symptoms appear to have little impact on this but in women with lower grade tears sexual symptoms have the greatest impact on preferred MoD. (C) 2017 Elsevier B.V. All rights reserved.