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Comparison of Cervical Lengths Using Transabdominal and Transvaginal Sonography in Midpregnancy
- Source :
- Obstetrical & Gynecological Survey. 69:126-128
- Publication Year :
- 2014
- Publisher :
- Ovid Technologies (Wolters Kluwer Health), 2014.
-
Abstract
- OBJECTIVES Cervical length assessment is helpful to predict and prevent preterm birth. However, transvaginal sonography is not easy to perform. The aim of this study was to investigate the relationship and discrepancies between cervical lengths measured by transabdominal and transvaginal sonography in midpregnancy. METHODS Transabdominal and transvaginal cervical lengths were measured in 255 pregnant women between 20 and 29 gestational weeks. The discrepancies in cervical lengths between the two methods were analyzed for the following maternal and fetal conditions: (1) vertex versus breech fetal presentation, (2) whether the fetal presenting part overlay the cervical internal os, (3) whether both the internal os and external os were visible or only the internal os was clearly visible, (4) maternal bladder filling status, (5) maternal age, (6) parity, and (7) gestational age. RESULTS The mean cervical lengths were not significantly different (mean ± SD, 3.88 ± 0.73 cm on transabdominal sonography and 3.93 ± 0.72 cm on transvaginal sonography; P = .129; Pearson r = 0.75). The 5th-percentile transabdominal cervical length was 26.0 mm, and the transvaginal length was 27.8 mm. There were significant discrepancies between the two methods in the cases in which a fetal presenting part overlay the internal os, in the cases in which the external os was not clearly visible, and in primiparous women. Transabdominal cervical measurements were consistently shorter than transvaginal measurements in the cases with discrepancies. CONCLUSIONS Transabdominal cervical length measurements are correlated with transvaginal measurements overall, and the transabdominal length is consistently shorter than the transvaginal length in cases with discrepancies. Transabdominal sonography could be used as a cervical length screening tool.
- Subjects :
- Adult
Tocolytic agent
Cervix Uteri
External os
Risk Assessment
Sensitivity and Specificity
Young Adult
Pregnancy
Gestational Weeks
Abdomen
Image Interpretation, Computer-Assisted
Republic of Korea
Transvaginal sonography
Prevalence
Humans
Medicine
Radiology, Nuclear Medicine and imaging
Advanced maternal age
Cervical length
Fetus
Radiological and Ultrasound Technology
business.industry
Reproducibility of Results
Obstetrics and Gynecology
Gestational age
General Medicine
Fetal Presentation
Bladder filling
Cervical Length Measurement
Pregnancy Trimester, Second
Vagina
Premature Birth
Female
business
Nuclear medicine
Subjects
Details
- ISSN :
- 00297828
- Volume :
- 69
- Database :
- OpenAIRE
- Journal :
- Obstetrical & Gynecological Survey
- Accession number :
- edsair.doi.dedup.....8e24484897f1f452325e9b40848c0c40