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Criado em : 17 Jan 2018
Alterado em : 20 Mar 2018

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Nota bibliográfica (sem autor) :

In vivo estimation of perineal body properties using ultrasound quasistatic elastography in nulliparous women. J Biomech. 2015 Jun 25;48(9) : 1575-9

Autores :

Chen L, Low LK, DeLancey JO, Ashton-Miller JA.

Ano de publicação :

2015

URL(s) :

https://www.ncbi.nlm.nih.gov/pubmed/25801422
https://doi.org/10.1016/j.jbiomech.2015.02.056

Résumé (français)  :

L’appréciation de l’élasticité du périnée fait encore défaut, que ce soit chez des femmes enceintes ou non. Le but est de développer une méthode d’évaluation de cette capacité d’étirement du muscle et tester sa faisabilité chez des femmes nullipares.

conclusion :
L’élastographie ultrasonore au moyen d’un coussin d’écartement fournit une méthode valable pour évaluer l’élasticité du périnée chez les femmes vivantes.

Abstract (English)  :

OBJECTIVE:
The perineal body must undergo a remarkable transformation during pregnancy to accommodate an estimated stretch ratio of over 3.3 in order to permit vaginal delivery of the fetal head. Yet measurements of perineal body elastic properties are lacking in vivo, whether in the pregnant or non-pregnant state. The objective of this study, therefore, was to develop a method for measuring perineal body elastic modulus and to test its feasibility in young nulliparous women.

METHODS:
An UltraSONIX RP500 ultrasound system was equipped with elastography software. Approximately 1 Hz free-hand sinusoidal compression loading of the perineum was used to measure the relative stiffness of the perineal body compared to that of a custom reference standoff pad with a modulus of 36.7 kPa. Measurements were made in 20 healthy nulliparous women. Four subjects were invited back for second and third visits to evaluate within- and between-visit repeatability using the coefficient of variation.

RESULTS:
The mean ± SD elastic compression modulus of the perineal body was 28.9 ± 4.7 kPa. Within- and between-visit repeatability averaged 3.4% and 8.3%, respectively.

CONCLUSION:
Ultrasound elastography using a standoff pad reference provides a valid method for evaluating the elastic modulus of the perineal body in living women.

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➡ episiotomia

Autor da esta ficha :

Alison Passieux — 17 Jan 2018
➡ última atualização : Bernard Bel — 20 Mar 2018