EP26.01: Prevalence of anal sphincter injuries identified using endoanal ultrasound among primipara women: a cross‐sectional analytical study

To determine the prevalence of anal sphincter injuries in primipara women, aged 19- to 35-year-old who will deliver term by normal spontaneous vaginal delivery, using endoanal ultrasound from March 2023 to April 2023 in our tertiary hospital. This is a cross-sectional study on primipara women aged 19- to 35-year-old who delivered via normal spontaneous vaginal delivery in a tertiary hospital from March 2023 to Apr 2023. All 48 participants were initially found to have a perineal injury. Thirty (62.5%) patients had second-degree tear while 18 (37.5%) suffered a third-degree tear. At 6 weeks follow-up, all underwent endoanal ultrasound to determine the extent or severity of tears or injuries to the anal sphincter complex and it was determined that only 1 out of 48 (2.1%) had internal anal sphincter injury while 97.9% are in normal condition. Only the weight of the newborn was significantly associated with anal sphincter injuries. The diagnostic accuracy of endoanal ultrasound was 64.58% (95% CI). There is a prevalence of 37.5% for anal sphincter injuries in primiparous patients who underwent NSD in our institution. Endoanal ultrasound accurately confirms the extent of these injuries and symptoms at 6-week follow-up is consistent with the characteristic of the injuries.