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Characterizing the Biaxial Mechanical Properties of Vaginal Maternal Adaptations During Pregnancy

[+] Author Affiliations
Stacy Tokar, Andrew Feola, Pamela A. Moalli, Steven Abramowitch

University of Pittsburgh, Pittsburgh, PA

Paper No. SBC2010-19394, pp. 689-690; 2 pages
  • ASME 2010 Summer Bioengineering Conference
  • ASME 2010 Summer Bioengineering Conference, Parts A and B
  • Naples, Florida, USA, June 16–19, 2010
  • Conference Sponsors: Bioengineering Division
  • ISBN: 978-0-7918-4403-8
  • Copyright © 2010 by ASME


Pelvic organ prolapse impacts the lives of many women. Injury during vaginal delivery is considered to be one of the greatest risk factors for developing this disorder. In this study, we characterized vaginal adaptations during pregnancy in terms of changes in the mechanical behavior of virgin and mid-pregnant vaginas using a planar biaxial mechanical testing protocol to determine the change necessary to avoid maternal birth injury. The findings of this study show that the vagina is anisotropic and that the tissue becomes more distensible circumferentially by mid-pregnancy in the rodent model.

Copyright © 2010 by ASME



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