Vaginal Tissue Properties versus Increased Intra-Abdominal Pressure: A Preliminary Biomechanical Study
Background/Aims: This study aims to evaluate the pelvic floor (PF) tension response during simulated increased intra-abdominal pressure (IAP) and the vaginal biomechanical properties. Methods: A 3-dimensional computational finite element model for PF was developed based on magnetic resonance imaging...
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| Veröffentlicht in: | Gynecologic and obstetric investigation 2011-01, Vol.71 (3), p.145-150 |
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| creator | Martins, Pedro A.L.S. Jorge, Renato M. Natal Ferreia, AntÓnio J.M. Saleme, Cristina S. Roza, Thuane Parente, Marco M.P. Pinotti, Marcos Mascarenhas, Teresa Santos, Agostinho Santos, Liliana Silva-Filho, Agnaldo L. |
| description | Background/Aims: This study aims to evaluate the pelvic floor (PF) tension response during simulated increased intra-abdominal pressure (IAP) and the vaginal biomechanical properties. Methods: A 3-dimensional computational finite element model for PF was developed based on magnetic resonance imaging from a nulliparous healthy volunteer. The model was used to simulate an IAP of 90 cm H 2 O and to evaluate the PF stresses in the longitudinal and transversal axes. The vaginal samples were obtained from 15 non-prolapsed female cadavers. A uniaxial tensile test to obtain stiffness and maximum stress of vaginal tissue in the longitudinal and transversal axes was performed. Results: The simulated IAP was associated with a similar PF stress state in the longitudinal and transversal axes. The stiffness and maximum stress in vaginal tissues presented a great variability between subjects. There was no difference in the vaginal tissue elasticity (6.2 ± 1.5 vs. 5.4 ± 1.1 MPa; p = 0.592) and maximum stress (2.3 ± 0.5 vs. 2.6 ± 0.9 MPa; p = 0.692) regarding the measurements in the longitudinal and transversal axes. Conclusion: The isotropic biomechanical behavior of vagina is in agreement with the PF stress state response during increased IAP. |
| doi_str_mv | 10.1159/000315160 |
| format | Article |
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Natal ; Ferreia, AntÓnio J.M. ; Saleme, Cristina S. ; Roza, Thuane ; Parente, Marco M.P. ; Pinotti, Marcos ; Mascarenhas, Teresa ; Santos, Agostinho ; Santos, Liliana ; Silva-Filho, Agnaldo L.</creator><creatorcontrib>Martins, Pedro A.L.S. ; Jorge, Renato M. Natal ; Ferreia, AntÓnio J.M. ; Saleme, Cristina S. ; Roza, Thuane ; Parente, Marco M.P. ; Pinotti, Marcos ; Mascarenhas, Teresa ; Santos, Agostinho ; Santos, Liliana ; Silva-Filho, Agnaldo L.</creatorcontrib><description>Background/Aims: This study aims to evaluate the pelvic floor (PF) tension response during simulated increased intra-abdominal pressure (IAP) and the vaginal biomechanical properties. Methods: A 3-dimensional computational finite element model for PF was developed based on magnetic resonance imaging from a nulliparous healthy volunteer. The model was used to simulate an IAP of 90 cm H 2 O and to evaluate the PF stresses in the longitudinal and transversal axes. The vaginal samples were obtained from 15 non-prolapsed female cadavers. A uniaxial tensile test to obtain stiffness and maximum stress of vaginal tissue in the longitudinal and transversal axes was performed. Results: The simulated IAP was associated with a similar PF stress state in the longitudinal and transversal axes. The stiffness and maximum stress in vaginal tissues presented a great variability between subjects. There was no difference in the vaginal tissue elasticity (6.2 ± 1.5 vs. 5.4 ± 1.1 MPa; p = 0.592) and maximum stress (2.3 ± 0.5 vs. 2.6 ± 0.9 MPa; p = 0.692) regarding the measurements in the longitudinal and transversal axes. Conclusion: The isotropic biomechanical behavior of vagina is in agreement with the PF stress state response during increased IAP.</description><identifier>ISSN: 0378-7346</identifier><identifier>EISSN: 1423-002X</identifier><identifier>DOI: 10.1159/000315160</identifier><identifier>PMID: 21150154</identifier><identifier>CODEN: GOBIDS</identifier><language>eng</language><publisher>Basel, Switzerland: Karger</publisher><subject>Abdomen - physiology ; Adolescent ; Adult ; Biological and medical sciences ; Biomechanical Phenomena - physiology ; Computer Simulation ; Female ; Gynecology. Andrology. Obstetrics ; Humans ; Magnetic Resonance Imaging ; Medical sciences ; Middle Aged ; Models, Biological ; Original Article ; Pelvic Floor - physiology ; Pressure ; Stress, Mechanical ; Tensile Strength ; Vagina - physiology ; Young Adult</subject><ispartof>Gynecologic and obstetric investigation, 2011-01, Vol.71 (3), p.145-150</ispartof><rights>2010 S. Karger AG, Basel</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2010 S. Karger AG, Basel.</rights><rights>Copyright (c) 2011 S. Karger AG, Basel</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c362t-a22d70e159961e33d7c3931d7641880f2fe2a3618c376d9cc540e1d7e07b75ae3</citedby><cites>FETCH-LOGICAL-c362t-a22d70e159961e33d7c3931d7641880f2fe2a3618c376d9cc540e1d7e07b75ae3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,2427,27922,27923</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24134459$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21150154$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Martins, Pedro A.L.S.</creatorcontrib><creatorcontrib>Jorge, Renato M. Natal</creatorcontrib><creatorcontrib>Ferreia, AntÓnio J.M.</creatorcontrib><creatorcontrib>Saleme, Cristina S.</creatorcontrib><creatorcontrib>Roza, Thuane</creatorcontrib><creatorcontrib>Parente, Marco M.P.</creatorcontrib><creatorcontrib>Pinotti, Marcos</creatorcontrib><creatorcontrib>Mascarenhas, Teresa</creatorcontrib><creatorcontrib>Santos, Agostinho</creatorcontrib><creatorcontrib>Santos, Liliana</creatorcontrib><creatorcontrib>Silva-Filho, Agnaldo L.</creatorcontrib><title>Vaginal Tissue Properties versus Increased Intra-Abdominal Pressure: A Preliminary Biomechanical Study</title><title>Gynecologic and obstetric investigation</title><addtitle>Gynecol Obstet Invest</addtitle><description>Background/Aims: This study aims to evaluate the pelvic floor (PF) tension response during simulated increased intra-abdominal pressure (IAP) and the vaginal biomechanical properties. Methods: A 3-dimensional computational finite element model for PF was developed based on magnetic resonance imaging from a nulliparous healthy volunteer. The model was used to simulate an IAP of 90 cm H 2 O and to evaluate the PF stresses in the longitudinal and transversal axes. The vaginal samples were obtained from 15 non-prolapsed female cadavers. A uniaxial tensile test to obtain stiffness and maximum stress of vaginal tissue in the longitudinal and transversal axes was performed. Results: The simulated IAP was associated with a similar PF stress state in the longitudinal and transversal axes. The stiffness and maximum stress in vaginal tissues presented a great variability between subjects. There was no difference in the vaginal tissue elasticity (6.2 ± 1.5 vs. 5.4 ± 1.1 MPa; p = 0.592) and maximum stress (2.3 ± 0.5 vs. 2.6 ± 0.9 MPa; p = 0.692) regarding the measurements in the longitudinal and transversal axes. Conclusion: The isotropic biomechanical behavior of vagina is in agreement with the PF stress state response during increased IAP.</description><subject>Abdomen - physiology</subject><subject>Adolescent</subject><subject>Adult</subject><subject>Biological and medical sciences</subject><subject>Biomechanical Phenomena - physiology</subject><subject>Computer Simulation</subject><subject>Female</subject><subject>Gynecology. Andrology. Obstetrics</subject><subject>Humans</subject><subject>Magnetic Resonance Imaging</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Models, Biological</subject><subject>Original Article</subject><subject>Pelvic Floor - physiology</subject><subject>Pressure</subject><subject>Stress, Mechanical</subject><subject>Tensile Strength</subject><subject>Vagina - physiology</subject><subject>Young Adult</subject><issn>0378-7346</issn><issn>1423-002X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><recordid>eNpd0ElLxDAUB_AgijMuB-8iRRDxUM3WpPU2isuAoOCCt5JJXseMXcakFfz2ps44gqe8hN9L8v4I7RF8SkiSnWGMGUmIwGtoSDhlMcb0dR0NMZNpLBkXA7Tl_QzjgFO-iQY0tIUNH6LiRU1trcroyXrfQfTgmjm41oKPPsH5zkfjWjtQHkyoWqfi0cQ01U_Lg4PQ4-A8GvV1aftj9xVd2KYC_aZqq4N6bDvztYM2ClV62F2u2-j5-urp8ja-u78ZX47uYs0EbWNFqZEYwjczQYAxIzXLGDFScJKmuKAFUMUESTWTwmRaJzxoIwHLiUwUsG10vLh37pqPDnybV9ZrKEtVQ9P5PBWMU0mwDPLwn5w1nQtj9YhnGRGiRycLpF3jvYMinztbhRlzgvM--nwVfbAHywu7SQVmJX-zDuBoCZQPwRRO1dr6P8cJ4zzJgttfuHflpuBWYPnON-QokyA</recordid><startdate>20110101</startdate><enddate>20110101</enddate><creator>Martins, Pedro A.L.S.</creator><creator>Jorge, Renato M. 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Natal ; Ferreia, AntÓnio J.M. ; Saleme, Cristina S. ; Roza, Thuane ; Parente, Marco M.P. ; Pinotti, Marcos ; Mascarenhas, Teresa ; Santos, Agostinho ; Santos, Liliana ; Silva-Filho, Agnaldo L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c362t-a22d70e159961e33d7c3931d7641880f2fe2a3618c376d9cc540e1d7e07b75ae3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Abdomen - physiology</topic><topic>Adolescent</topic><topic>Adult</topic><topic>Biological and medical sciences</topic><topic>Biomechanical Phenomena - physiology</topic><topic>Computer Simulation</topic><topic>Female</topic><topic>Gynecology. Andrology. Obstetrics</topic><topic>Humans</topic><topic>Magnetic Resonance Imaging</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Models, Biological</topic><topic>Original Article</topic><topic>Pelvic Floor - physiology</topic><topic>Pressure</topic><topic>Stress, Mechanical</topic><topic>Tensile Strength</topic><topic>Vagina - physiology</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Martins, Pedro A.L.S.</creatorcontrib><creatorcontrib>Jorge, Renato M. 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Natal</au><au>Ferreia, AntÓnio J.M.</au><au>Saleme, Cristina S.</au><au>Roza, Thuane</au><au>Parente, Marco M.P.</au><au>Pinotti, Marcos</au><au>Mascarenhas, Teresa</au><au>Santos, Agostinho</au><au>Santos, Liliana</au><au>Silva-Filho, Agnaldo L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Vaginal Tissue Properties versus Increased Intra-Abdominal Pressure: A Preliminary Biomechanical Study</atitle><jtitle>Gynecologic and obstetric investigation</jtitle><addtitle>Gynecol Obstet Invest</addtitle><date>2011-01-01</date><risdate>2011</risdate><volume>71</volume><issue>3</issue><spage>145</spage><epage>150</epage><pages>145-150</pages><issn>0378-7346</issn><eissn>1423-002X</eissn><coden>GOBIDS</coden><abstract>Background/Aims: This study aims to evaluate the pelvic floor (PF) tension response during simulated increased intra-abdominal pressure (IAP) and the vaginal biomechanical properties. Methods: A 3-dimensional computational finite element model for PF was developed based on magnetic resonance imaging from a nulliparous healthy volunteer. The model was used to simulate an IAP of 90 cm H 2 O and to evaluate the PF stresses in the longitudinal and transversal axes. The vaginal samples were obtained from 15 non-prolapsed female cadavers. A uniaxial tensile test to obtain stiffness and maximum stress of vaginal tissue in the longitudinal and transversal axes was performed. Results: The simulated IAP was associated with a similar PF stress state in the longitudinal and transversal axes. The stiffness and maximum stress in vaginal tissues presented a great variability between subjects. There was no difference in the vaginal tissue elasticity (6.2 ± 1.5 vs. 5.4 ± 1.1 MPa; p = 0.592) and maximum stress (2.3 ± 0.5 vs. 2.6 ± 0.9 MPa; p = 0.692) regarding the measurements in the longitudinal and transversal axes. Conclusion: The isotropic biomechanical behavior of vagina is in agreement with the PF stress state response during increased IAP.</abstract><cop>Basel, Switzerland</cop><pub>Karger</pub><pmid>21150154</pmid><doi>10.1159/000315160</doi><tpages>6</tpages></addata></record> |
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| subjects | Abdomen - physiology Adolescent Adult Biological and medical sciences Biomechanical Phenomena - physiology Computer Simulation Female Gynecology. Andrology. Obstetrics Humans Magnetic Resonance Imaging Medical sciences Middle Aged Models, Biological Original Article Pelvic Floor - physiology Pressure Stress, Mechanical Tensile Strength Vagina - physiology Young Adult |
| title | Vaginal Tissue Properties versus Increased Intra-Abdominal Pressure: A Preliminary Biomechanical Study |
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