Document Detail

A simple 2D ultrasound technique to assess intrapartumcervical dilatation: a pilot study.
MedLine Citation:
PMID:  23024020     Owner:  NLM     Status:  Publisher    
Objectives: The aim of this study is to describe a 2D ultrasound technique to measure cervical dilatation in labour and to compare ultrasound with digital measurements. Methods:Transperineal 2D ultrasound was performed in 21primiparous with singleton fetus in cephalic presentation women in labour and cervical dilatation measured prior to or after a digital vaginal examination. The absolute difference was calculated and Bland Altman analysis was used to assess the mean difference between digital vaginal examination and ultrasound examination of cervical dilatation. Pearson analysis was used to determine the correlation between digital and ultrasound measurements. Interclass correlation coefficients (ICCs) with 95% confidence interval (CI) were used to evaluate the reliability of the two methods. Results: Satisfactory quality images of the cervix were obtained in 19 of 21 cases. There was positive correlation between 2D ultrasound measurement of the cervical dilatation and digital vaginal examination (Pearson coefficient r = 0.821, n = 19, p<0.001). Bland Altman analysis showed mean difference between digital and ultrasound measurements of 0.08cm (limits of agreement -1.83 to +2.00) and the absolute difference was 1.24cm. The intraclass correlation coefficient between the two methods was 0.81 (95%CI, 0.58 to 0.92). Conclusion: The assessment and measurement of cervical dilatation by transperineal 2D ultrasound is feasible with close agreement shown between the technique and digital vaginal examination. The technique that we describe could represent an important component of a 'sonopartogram' for the ultrasound assessment of labour progress. Copyright © 2012 ISUOG. Published by John Wiley & Sons, Ltd.
W A Hassan; T M Eggebø; M Ferguson; C Lees
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-1
Journal Detail:
Title:  Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology     Volume:  -     ISSN:  1469-0705     ISO Abbreviation:  Ultrasound Obstet Gynecol     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-1     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9108340     Medline TA:  Ultrasound Obstet Gynecol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 ISUOG. Published by John Wiley & Sons, Ltd.
Fetal Medicine Department, Rosie Hospital, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, CB2 2QQ. United Kingdom.
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