[The ratio birth-weight, placental weight and the term of delivery. A contribution to the problem of a relative placental insufficiency in late pregnancy (author's transl)].
It is suggested, that a relative placental insufficiency in late pregnancy is one of the releasing factors of childbirth. Under this assumption 1027 deliveries in term pregnancy (266th-294th day of pregnancy) were inquired on the interrelationship between the ratio brith-weight: placental-weight and the duration of pregnancy. The average birth-weight increases slighly but significantly with the duration of pregnancy just as the average placental-weight. The average ratio birth-weight: placental-weight decreases significantly: The more unfavorable the ratio birth-weight: placental-weight is, the shorter remains the fetus in utero. This underlines the assumption of a relative placental insufficiency as one of the releasing factors of childbirth.
D001724:Birth Weight; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D009929:Organ Size; D010920:Placenta / Q000033:anatomy & histology*; D010927:Placental Insufficiency / Q000175:diagnosis; D011247:Pregnancy; D011263:Pregnancy Trimester, Third
Die Relation Geburtsgewicht: Plazentagewicht und Entbindungstermin. Ein Beitrag zur Frage der relativen Plazenta-Insuffizienz in der Spätschwangerschaft