Sonographic fetal head circumference and the risk of obstetric anal sphincter injury following vaginal delivery.
Birth weight
Head circumference
Obstetric anal sphincter injury
Primiparous
Risk factors
Journal
International urogynecology journal
ISSN: 1433-3023
Titre abrégé: Int Urogynecol J
Pays: England
ID NLM: 101567041
Informations de publication
Date de publication:
Nov 2020
Nov 2020
Historique:
received:
27
01
2020
accepted:
26
03
2020
pubmed:
8
4
2020
medline:
24
6
2021
entrez:
8
4
2020
Statut:
ppublish
Résumé
High birth weight is strongly associated with OASIS; nevertheless, it has not been determined which biometric characteristics most affect OASIS occurrence. We aimed to evaluate the association of estimated fetal head circumference with OASIS occurrence among primiparous women delivering by unassisted vaginal delivery. A retrospective study included all primiparous women who delivered at term by spontaneous vaginal delivery from 2011-2019. Women were allocated to two groups: (1) those who experienced OASIS and (2) those who did not experience OASIS. Risk factors for OASIS were analyzed. Overall, 7646 women were included in the study cohort. Of those, 119/7646 (1.6%; 95% CI, 1.3-1.9%) experienced OASIS. Sonographic head circumference and birth weight did not vary between groups. Prolonged second stage was more common in the OASIS group [23 (19%) vs. 986 (13.3%), 1.58 OR (95% CI 1.003-2.51, p = 0.04)]. Absence of epidural analgesia was more common in the OASIS group [30 (25%) vs. 1197 (15.9%), 1.8 OR (95% CI 1.1-2.7, p = 0.006)]. On multivariate logistic regression analysis, the lack of epidural analgesia and duration of second stage of labor were both independently positively associated with OASIS [adjusted OR 2.67 (95% CI 1.55-4.62), p < 0.001, adjusted OR 1.23 (95% CI 1.11-1.43), p < 0.001, respectively)]. Sonographic head circumference and birth weight are not associated with OASIS occurrence among primiparous women delivering by an unassisted vaginal delivery. Prolonged second stage and the use of epidural analgesia are modifiable risk factors among these women.
Identifiants
pubmed: 32253487
doi: 10.1007/s00192-020-04296-3
pii: 10.1007/s00192-020-04296-3
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
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