Prominent cervical mucous and its impact on cervical length measurement: findings of a national survey

Thomas, Joseph T., Petersen, Scott G., Chua, Jacqueline, Connard, Suzanne, Gibbons, Kristen, Cincotta, Robert and Gardener, Glenn (2014) Prominent cervical mucous and its impact on cervical length measurement: findings of a national survey. Australian and New Zealand Journal of Obstetrics and Gynaecology, 54 2: 108-116. doi:10.1111/ajo.12173


Author Thomas, Joseph T.
Petersen, Scott G.
Chua, Jacqueline
Connard, Suzanne
Gibbons, Kristen
Cincotta, Robert
Gardener, Glenn
Title Prominent cervical mucous and its impact on cervical length measurement: findings of a national survey
Journal name Australian and New Zealand Journal of Obstetrics and Gynaecology   Check publisher's open access policy
ISSN 1479-828X
0004-8666
Publication date 2014-04-01
Year available 2014
Sub-type Article (original research)
DOI 10.1111/ajo.12173
Open Access Status Not Open Access
Volume 54
Issue 2
Start page 108
End page 116
Total pages 9
Place of publication Richmond, VIC, Australia
Publisher Wiley-Blackwell Publishing Asia
Language eng
Formatted abstract
Introduction
Cervical length measurement by transvaginal scanning (TVS) has been proposed by some as a universal screening test for preterm labour. The presence of prominent cervical mucous may affect assessment of the cervix; however, the exact technique to measure the cervix when there is prominent mucous or funnelling has not been described. We evaluated the level of agreement in cervical length measurements amongst Australian specialists and sonographers reporting on cervical assessment using an online survey.

Methods
We conducted an online survey with 11 images of the cervix to assess how obstetric sonographers and sonologists report on the cervix when there is prominent mucous or funnelling. They were asked five questions about the image of the cervix. A kappa coefficient was calculated from the responses.

Results
We had 151 complete responses to the online survey. For the images which showed funnelling or prominent cervical mucous, there was little agreement regarding the cervix being open or closed and regards the location of the internal os. The Kappa coefficient was 0.22 indicating a low level of agreement for the location of the internal os.

Conclusion
There is lack of agreement amongst Australian specialists and sonographers reporting on cervical assessment when there is prominent mucous or funnelling seen in the cervix. We propose a method to standardise reporting on the cervix incorporating the chorioamniotic membrane for the identification of the inner cervical os when there is prominent mucous or funnelling.
Keyword Cervical funnelling
Cervical length
Cervical mucous
Preterm birth
Transvaginal scan
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
Faculty of Medicine
School of Medicine Publications
 
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