Vaginal Birth After Caesarean Raises Risk of Perineal Tear
Obstetric anal sphincter injury (OASI), the major cause of fecal incontinence in women, occurs at a rate of 0.6%-11% of vaginal deliveries and substantially affects women's quality of life. In a recent study, researchers have reported that women having their first vaginal birth after caesarean (VBAC) have a significantly increased risk of sustaining a third- or fourth-degree tear, compared with primiparous women having a vaginal birth. The study findings were published in the British Journal of Obstetrics and Gynaecology on December 16, 2021.
Vaginal birth after caesarean (VBAC) has been suggested to be associated with an increased risk of obstetric anal sphincter injury (compared with primiparous women who birth vaginally). However, prior studies have been small or have used outdated methodology. Therefore, Dr Anthea Lindquist and his team conducted a study to validate whether the risk of obstetric anal sphincter injury among women having their first VBAC is greater than that among primiparous women having a vaginal birth.
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