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A STUDY OF THE ELASTICITY AND TENSION OF FETAL MEMBRANES AND OF THE RELATION OF THE AREA OF THE GESTATIONAL SAC TO THE AREA OF THE UTERINE CAVITY
Author(s) -
ParryJones E.,
Priya S.
Publication year - 1976
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/j.1471-0528.1976.tb00810.x
Subject(s) - membrane , elasticity (physics) , uterine cavity , fetus , pregnancy , gestational age , medicine , gestation , tension (geology) , obstetrics , chemistry , materials science , uterus , biology , endocrinology , ultimate tensile strength , composite material , biochemistry , genetics
Summary The surface area of the uterine cavity before delivery was compared with that ot the gestational sac after delivery and experiments were carred out to test the elasticity of membranes and the tension on them during labour. The results indicated that after 28 weeks of pregnancy the intact fetal membranes were under tension and were not a passive lining to the uterine cavity and that there was a significant decrease in the elasticity of those membranes which ruptured before labour irrespective of the maturity of the pregnancy. The results failed to support the suggestion that there was a deficiency in the area of the gestational sac in those cases where the membranes ruptured before labour.