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Reliability of two-dimensional transvaginal sonographic measurement of lower uterine segment thickness using video sequences.
- Source :
-
American journal of perinatology [Am J Perinatol] 2012 Aug; Vol. 29 (7), pp. 527-32. Date of Electronic Publication: 2012 Apr 11. - Publication Year :
- 2012
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Abstract
- Objectives: To report the intra- and interobserver reliability of measurement of the lower uterine segment (LUS) thickness using transvaginal sonographic videos.<br />Methods: A prospective study of 60 women with previous, low-transverse cesarean undergoing LUS examination (36 to 39 weeks) was performed. Two observers independently measured full LUS thickness using transvaginal sonography. A video of the LUS was recorded and analyzed more than 2 months later by both observers. Intra- and interobserver reliability was assessed with median absolute differences and interquartile range (IQR), nonparametric limits of agreement, intraclass correlation coefficients (ICC) with 95% confidence interval (95% CI), and kappa coefficients.<br />Results: Median full LUS thickness was 3.6 mm (range: 0.9 to 8.0 mm). Intraobserver repeatability was excellent (median difference: 0.2 mm, IQR: 0.1 to 0.4; ICC: 0.94, 95% CI: 0.90 to 0.96; kappa: 1.00). Interobserver (median difference: 0.3 mm, IQR: 0.2 to 1.3; ICC: 0.91, 95% CI: 0.86 to 0.95; kappa: 0.76, 95% CI: 0.54 to 0.98) and intermethod reproducibility (median difference: 0.4 mm, IQR: 0.2 to 0.8; ICC: 0.82, 95% CI: 0.72 to 0.89; kappa: 0.69, 95% CI: 0.43 to 0.94) were good. However, both interobserver and intermethod reproducibility were improved when LUS thickness was below 3 mm.<br />Conclusion: Full LUS thickness measured from transvaginal sonographic videos has excellent intra- and interobserver reproducibility and good reproducibility with live transvaginal ultrasound.<br /> (Copyright © 2012 by Thieme Medical Publishers)
Details
- Language :
- English
- ISSN :
- 1098-8785
- Volume :
- 29
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- American journal of perinatology
- Publication Type :
- Academic Journal
- Accession number :
- 22495899
- Full Text :
- https://doi.org/10.1055/s-0032-1310524