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DOI	10.1111/ajo.13342
	The association between sonographic fetal head circumference, obstetric anal sphincter injury and mode of delivery: A retrospective cohort study
	Nelson, Philippa; Nugent, Rachael
通讯作者	Nelson, P (corresponding author), Sunshine Coast Univ Hosp, Dept Obstet & Gynaecol, 6 Doherty St, Birtinya, Qld 4575, Australia.
来源期刊	AUSTRALIAN & NEW ZEALAND JOURNAL OF OBSTETRICS & GYNAECOLOGY
ISSN	0004-8666
EISSN	1479-828X
出版年	2021
英文摘要	Background There is no consensus to the implications of an increased sonographic fetal head circumference (HC) and its impact on delivery. Aim To examine if there is any association between sonographic fetal HC, obstetric anal sphincter injury (OASIS) and mode of delivery. Materials and Methods A retrospective cohort study of term, singleton births between April 2017 and March 2019 at a large regional hospital in Australia with a third trimester ultrasound. Logistic regressions were performed investigating sonographic fetal HC and additional risk factors for OASIS. Further multinomial logistic regressions assessed the relationship between the sonographic HC and mode of delivery. Odds ratios and their 95% CIs were reported. Results Of 667 eligible women, 487 (73%) had vaginal births, with 32 (6.6%) sustaining an OASIS and 180 (27%) had caesarean sections (CS). The sonographic fetal HC did not show an association with OASIS (odds ratio 1.005; CI 0.99-1.01, P = 0.447). A statistically significant association (P < 0.05) with OASIS was found with Asian ethnicity (4.38; 1.5-11.32), prolonged second stage (>= 2 h) (4.26; 1.57-10.49) and occiput posterior position (4.01; 1.08-11.92). For women with a sonographic fetal HC >= 90th percentile, the odds of having CS compared to a spontaneous vaginal birth are 2.77 (95% CI: 1.36, 5.62; P = 0.005) times higher than those who have a HC < 90th percentile. Conclusion This study does not support the use of sonographic fetal HC in assessing a woman's risk of sustaining an OASIS. Sonographic fetal HC is associated with mode of delivery.
英文关键词	caesarean section obstetric anal sphincter injury perineum injuries pregnancy ultrasonography prenatal
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000634864700001
WOS类目	Obstetrics & Gynecology
WOS研究方向	Obstetrics & Gynecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352075
作者单位	[Nelson, Philippa; Nugent, Rachael] Sunshine Coast Univ Hosp, Dept Obstet & Gynaecol, 6 Doherty St, Birtinya, Qld 4575, Australia
推荐引用方式 GB/T 7714	Nelson, Philippa,Nugent, Rachael. The association between sonographic fetal head circumference, obstetric anal sphincter injury and mode of delivery: A retrospective cohort study[J],2021.
APA	Nelson, Philippa,&Nugent, Rachael.(2021).The association between sonographic fetal head circumference, obstetric anal sphincter injury and mode of delivery: A retrospective cohort study.AUSTRALIAN & NEW ZEALAND JOURNAL OF OBSTETRICS & GYNAECOLOGY.
MLA	Nelson, Philippa,et al."The association between sonographic fetal head circumference, obstetric anal sphincter injury and mode of delivery: A retrospective cohort study".AUSTRALIAN & NEW ZEALAND JOURNAL OF OBSTETRICS & GYNAECOLOGY (2021).