title: [Some experiences concerning the effect of fetal respiratory movement (author's transl)].
abstract: The effect of negative pressure by intrauterine respiratory movements of 115 fetal rabbits is examined between the 25th and 28th day of gestation. An intraamnial injection of Burri-ink with particles of the size between 20 and 50 nm and of a suspension of polyamid (size between 25 and 40 micrometer) in physiological NaC1-solution was done. Both markers are not inspirated during the time of 24 h p.i. However you can find them after 19 min in the circulated fetal blood. There is the same effect if you block respiratory movements by drugs. There is a correlation to the concentration of the markers in the amniotic fluid, but no correlation to the size of the particles of those markers.
mesh_terms: D000650:Amnion; D000818:Animals; D005260:Female; D005333:Fetus / Q000502:physiology*; D007267:Injections; D007281:Ink; D011247:Pregnancy; D011817:Rabbits; D012119:Respiration; D013997:Time Factors
vernacular_title: Ein Beitrag zur Auswirkung fetaler Atembewegung.