Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/111342
Title: Cervical length vs VOCAL cervical volume for predicting pre-term delivery in asymptomatic women at 20-22 weeks' pregnancy
Authors: Barber, M. A.
Medina, M.
Cabrera, F.
Romero, A.
Valle Morales, Leonor 
Garcia-Hernández, J. A.
UNESCO Clasification: 320108 Ginecología
Keywords: 3D-ultrasound
Cervical length
Cervical volume
Prematurity
VOCAL
Issue Date: 2012
Journal: Journal of Obstetrics and Gynaecology 
Abstract: We conducted a prospective observational study of 306 asymptomatic women at 2022 weeks of pregnancy to compare 3-dimensional ultrasound measurements of cervical volume with 2-dimensional ultrasound measurements of cervical length to evaluate the performance of cervical volume as a predictor of pre-term delivery, compared with the current standard, cervical length. Participants underwent transvaginal ultrasound measurements of cervical length (mm) and cervical volume (cm3). Cervical volume as measured by 3-dimensional ultrasound was found to be a useful tool for predicting pre-term delivery; however, due to the high correlation between cervical length and cervical volume and the lack of differences in the sensitivity, specificity, positive predictive value, negative predictive value and relative risk between the two methods, replacing cervical length measurements with cervical volume calculations does not seem to be justified for this purpose, because of increased difficulty in volume acquisition.
URI: http://hdl.handle.net/10553/111342
ISSN: 0144-3615
DOI: 10.3109/01443615.2012.698330
Source: Journal of Obstetrics and Gynaecology [ISSN 0144-3615], v. 32 (7), p. 648-651
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