Amniotic fluid pressure during pregnancy.
Intrauterine pressure was measured, at the time of diagnostic amniocentesis or cordocentesis, in 200 pregnancies at 10-38 weeks' gestation. Mean pressure decreased exponentially with gestation from 9 mm Hg at 10 weeks reaching a plateau of 5 mm Hg at 30 weeks. These findings are compatible with Laplace's law of pressure in spheroids.
Sideris
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Harris Birthright Research Centre for Fetal Medicine, King's College Hospital, London, UK.
Nicolaides
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KH
D000649:Amniocentesis; D000653:Amniotic Fluid / Q000502:physiology*; D005260:Female; D005312:Fetal Blood; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy / Q000502:physiology*; D012016:Reference Values