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Clinical and Experimental Obstetrics & Gynecology  2021, Vol. 48 Issue (3): 494-499    DOI: 10.31083/j.ceog.2021.03.2298
Original Research Previous articles | Next articles
Reliability and agreement of three-dimensional/four-dimensional transperineal ultrasound in women with chronic pelvic pain
Maria Aparecida Mazzutti Verlangieri Carmo1, Helmer Herren2, Francisco J. C. Dos-Reis2, Fabricio Da Silva Costa2, 3, Julio C. Rosa-e-Silva2, Antonio Alberto Nogueira2, Omero Benedicto Poli-Neto2, *()
1Department of Gynecology and Obstetrics, Júlio Muller University Hospital, Faculty of Medical Sciences, Federal University of Mato Grosso, 78005-500 Cuiabá, Brazil
2Department of Gynecology and Obstetrics, Hospital das Clínicas, Ribeirão Preto Medical School, University of São Paulo, 14010-120 Ribeirão Preto, Brazil
3Department of Obstetrics and Gynaecology, Monash University, 3168 Melbourne, Victoria, Australia
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Abstract  
Background: Chronic pelvic pain is a common complaint in the gynecological office. The association among anus levator muscle injury, CPP of unknown origin in parous women, and pelvic sensory symptoms have been demonstrated. The study's purpose is to assess the intrarater/interrater reliability and agreement of pelvic floor biometry and levator ani muscle injury evaluated using three-dimensional ultrasound in women with chronic pelvic pain. Methods: Two raters independently and blindly acquired three datasets of three-dimensional transperineal ultrasound volumes. The datasets were evaluated 60 days apart. To assess levator ani muscle injury, the hiatal area/diameter, levator ani muscle thickness, urethra-anus distance, and levator-urethra gap were measured. The intrarater reproducibility and interrater reproducibility were calculated. The concordance correlation coefficients and limits of agreement were analyzed in 147 three-dimensional ultrasound volumes obtained from 49 patients. Results: Levator ani muscle injury was detected in 10.2% (n = 5/49), with a good intrarater concordance correlation of >0.90 for anteroposterior diameter, hiatal area, levator-urethra gap, and urethra-anus distance. The hiatal transverse diameter and levator ani muscle thickness presented poor correlation, with limits of agreement of 28.2% and 29.7%, respectively. The levator-urethra gap also presented poor interrater concordance. Overall, the interrater evaluation had moderate to substantial concordance. Discussion: In the detection of levator ani muscle injury in parous women, the hiatal anteroposterior diameter, hiatal area, and urethra-anus distance can be reliably assessed using three-dimensional transperineal ultrasound of the pelvic floor. However, owing to poor reliability, the hiatal transverse diameter, levator ani muscle thickness, and levator ani muscle-urethra gap require more studies before they can be applied clinically.
Key words:  Chronic pelvic pain      Dyspareunia      Endovaginal ultrasound      Pelvic floor injury      Reproducibility      Tridimensional ultrasound     
Submitted:  20 September 2020      Revised:  10 February 2021      Accepted:  19 February 2021      Published:  15 June 2021     
*Corresponding Author(s):  Omero Benedicto Poli-Neto     E-mail:  polineto@usp.br

Cite this article: 

Maria Aparecida Mazzutti Verlangieri Carmo, Helmer Herren, Francisco J. C. Dos-Reis, Fabricio Da Silva Costa, Julio C. Rosa-e-Silva, Antonio Alberto Nogueira, Omero Benedicto Poli-Neto. Reliability and agreement of three-dimensional/four-dimensional transperineal ultrasound in women with chronic pelvic pain. Clinical and Experimental Obstetrics & Gynecology, 2021, 48(3): 494-499.

URL: 

https://ceog.imrpress.com/EN/10.31083/j.ceog.2021.03.2298     OR     https://ceog.imrpress.com/EN/Y2021/V48/I3/494

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