Kristina Drusany Staric1, Adolf Lukanovic1, Petra Petrocnik2, Vita Zacesta3, Corrado Cescon4, Miha Lucovnik5. 1. Division of Obstetrics and Gynaecology, University Medical Centre Ljubljana, Slajmerjeva 4, 1000 Ljubljana, Slovenia. 2. Faculty of Health Sciences, Midwifery Division, University of Ljubljana, Zdravstvena pot 5, 1000 Ljubljana, Slovenia. 3. Riga maternity hospital, Riga Stradins University, Dzirciema 1r6, LV-1007 Riga, Latvia. 4. Department of Business Economics, Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, Le Gerre, Via Pobiette 11, CH-6928 Manno, Switzerland. 5. Division of Obstetrics and Gynaecology, University Medical Centre Ljubljana, Slajmerjeva 4, 1000 Ljubljana, Slovenia. Electronic address: miha.lucovnik@kclj.si.
Abstract
OBJECTIVE: to examine potential association between mediolateral episiotomy and reduced incidence of obstetrical anal sphincter injuries (OASIS) diagnosed by endoanal ultrasound. DESIGN: prospective cohort study. SETTING: tertiary referral university hospital. PARTICIPANTS: sixty nulliparous women at 28-33 weeks of gestation with singleton pregnancies were included between 2010 and 2012. MEASUREMENTS AND FINDINGS: participants were examined with endoanal ultrasound at 28-33 weeks gestation and at 6-7 weeks post-partum. At both visits, symptoms of anal incontinence were assessed using Cleveland Clinic (Wexner) faecal incontinence scoring system. Mann Whitney U-test and χ2 test was used to compare groups with vs. without episiotomy and groups with vs. without OASIS diagnosed by ultrasound. χ2 test was used to assess correlation between OASIS and anal incontinence symptoms (p≤0.05 considered significant). None of the women included had sphincter injury or anal incontinence before childbirth. All delivered vaginally. Mediolateral episiotomy was performed in 33 (55%) cases. Six (10%) had OASIS on endoanal ultrasound (two were also diagnosed clinically), and 11 had symptoms of anal incontinence post-partum. No significant differences were seen in clinical characteristics between groups with vs. without episiotomy. No significant differences were seen in episiotomy rate (p=0.14), angle (p=0.42) and length (p=0.14) between groups with vs. without OASIS on ultrasound. Correlation between anal incontinence symptoms and sonographically diagnosed OASIS was statistically significant (p=0.04). KEY CONCLUSIONS: mediolateral episiotomy does not seem to be protective against clinically or sonographically diagnosed OASIS even when episiotomy technique is considered. Endoanal ultrasound allows a significantly better detection of symptomatic OASIS compared to clinical examination alone. IMPLICATIONS FOR PRACTICE: mediolateral episiotomy should be considered only when shortening the second stage of labour is indicated due to foetal distress, and not as a means of OASIS prevention.
OBJECTIVE: to examine potential association between mediolateral episiotomy and reduced incidence of obstetrical anal sphincter injuries (OASIS) diagnosed by endoanal ultrasound. DESIGN: prospective cohort study. SETTING: tertiary referral university hospital. PARTICIPANTS: sixty nulliparous women at 28-33 weeks of gestation with singleton pregnancies were included between 2010 and 2012. MEASUREMENTS AND FINDINGS:participants were examined with endoanal ultrasound at 28-33 weeks gestation and at 6-7 weeks post-partum. At both visits, symptoms of anal incontinence were assessed using Cleveland Clinic (Wexner) faecal incontinence scoring system. Mann Whitney U-test and χ2 test was used to compare groups with vs. without episiotomy and groups with vs. without OASIS diagnosed by ultrasound. χ2 test was used to assess correlation between OASIS and anal incontinence symptoms (p≤0.05 considered significant). None of the women included had sphincter injury or anal incontinence before childbirth. All delivered vaginally. Mediolateral episiotomy was performed in 33 (55%) cases. Six (10%) had OASIS on endoanal ultrasound (two were also diagnosed clinically), and 11 had symptoms of anal incontinence post-partum. No significant differences were seen in clinical characteristics between groups with vs. without episiotomy. No significant differences were seen in episiotomy rate (p=0.14), angle (p=0.42) and length (p=0.14) between groups with vs. without OASIS on ultrasound. Correlation between anal incontinence symptoms and sonographically diagnosed OASIS was statistically significant (p=0.04). KEY CONCLUSIONS: mediolateral episiotomy does not seem to be protective against clinically or sonographically diagnosed OASIS even when episiotomy technique is considered. Endoanal ultrasound allows a significantly better detection of symptomatic OASIS compared to clinical examination alone. IMPLICATIONS FOR PRACTICE: mediolateral episiotomy should be considered only when shortening the second stage of labour is indicated due to foetal distress, and not as a means of OASIS prevention.
Authors: Danielle K Garner; Akash B Patel; Jun Hung; Monica Castro; Tamar G Segev; Jeffrey H Plochocki; Margaret I Hall Journal: Diagnostics (Basel) Date: 2021-02-02