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A comparative biomechanical analysis of term fetal membranes in human and domestic species.

Abstract：

OBJECTIVE:The purpose of this study was to biomechanically characterize and compare human, porcine, equine, and ovine fetal membranes. STUDY DESIGN:Noncontact metrology was used for topographic analyses. Uniaxial tensile testing was performed to resolve specific biomechanical values. Puncture force and radial stresses were determined with biaxial puncture testing. Microstructure and surface tortuosity were analyzed histologically. RESULTS:Equine and human membranes sustained larger magnitude loading, but ovine and porcine membranes exhibited stronger material properties. Biaxial puncture validated uniaxial results; human and equine groups accommodated the largest loads but lowest stresses. Equine membranes were mostly vascularized; tortuosity was highest in porcine membranes. Species' gestation length was correlated positively with membrane thickness. CONCLUSION:The anatomy of placentation and length of species gestation show distinct relationships to membrane biomechanics. Unlike other species, human fetal membranes do not compensate for structural weakness with a thicker membrane. This finding may explain the high incidence of preterm premature rupture of membranes in humans.

journal_name

Am J Obstet Gynecol

journal_title

American journal of obstetrics and gynecology

authors

Borazjani A,Weed BC,Patnaik SS,Feugang JM,Christiansen D,Elder SH,Ryan PL,Liao J

doi

10.1016/j.ajog.2010.12.003

subject

Has Abstract

pub_date

2011-04-01 00:00:00

pages

365.e25-36

issue

4

eissn

0002-9378

issn

1097-6868

pii

S0002-9378(10)02405-1

journal_volume

204

pub_type

杂志文章

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