Does birthweight have a role in the effect of episiotomy on anal sphincter injury?
Birthweight
Lateral episiotomy
Nulliparous
Obstetric anal sphincter injury
Vacuum-assisted delivery
Journal
Archives of gynecology and obstetrics
ISSN: 1432-0711
Titre abrégé: Arch Gynecol Obstet
Pays: Germany
ID NLM: 8710213
Informations de publication
Date de publication:
01 2020
01 2020
Historique:
received:
05
12
2019
accepted:
13
01
2020
pubmed:
29
1
2020
medline:
3
7
2020
entrez:
29
1
2020
Statut:
ppublish
Résumé
Most professional guidelines advise against routine episiotomy during vaginal delivery, although mounting evidence supports its protective role regarding obstetric anal sphincter injury (OASI). We aimed to study the effect of lateral and mediolateral episiotomies on the rate of OASI in relation to birthweight among nulliparous women undergoing vaginal delivery. A historical cohort study was conducted of all nulliparous women who delivered vaginally at term between 2011 and 2019 at a tertiary university hospital. Women were allocated into two groups: (1) with OASI and (2) without OASI. Episiotomy performance and birthweight groups were analyzed. Overall, 22,250 deliveries were analyzed for inclusion: 18,533 (83.3%) spontaneous vaginal deliveries (SVD), 3222 (14.5%) vacuum-assisted deliveries (VAD) and 495 (2.2%) forceps deliveries. Total episiotomy and OASI rate was 48.2% and 1.7%, respectively. Episiotomy rate was lower in the OASI group as compared to the no OASI group (158 (41.3%) vs. 10,568 (48.3%), OR 0.75, 0.61-0.92, p = 0.006). Median birthweight was higher for OASI group neonates (3355 vs. 3160, p < 0.001). In SVDs, episiotomy decreased the rate of OASI in neonatal birthweight groups of 3000-3499, 3500-3999 and > 4000 g (OR 0.56, 0.38-0.82, p = 0.003; 0.66, 0.45-0.99, p = 0.04 and 0.24, 0.07-0.78, p = 0.01, respectively). In VADs, episiotomy decreased the rate of OASI in the neonatal weight groups of 2500-2999 and 3000-3499 g (OR 0.36, 0.14-0.89, p = 0.02 and OR 0.38, 0.19-0.75, p = 0.004, respectively). Lateral and mediolateral episiotomies are independent modifiable predictors of OASI, protective against OASI in SVDs when neonates weigh > 3000 g and 2500-3499 g in VADs.
Identifiants
pubmed: 31989293
doi: 10.1007/s00404-020-05444-2
pii: 10.1007/s00404-020-05444-2
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
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