New criterion of placental barrier maturity.
In 120 full term pregnancies and 20 premature deliveries number of plates thickness of epithelial plate and number of vili in 1 mm2 placenta have been determined by histological investigation. These morphometric studies lead to the following conclusion: the increase of placental transport ability corresponds with fetal age and weight. The ratio between number of plates to their thickness is introduced as transportation index. There is a correlation between placental morphology and fetal maturity.
Janowiak
Z
Z
Department of Pathology, Medical Academy Gdańsk.
Mazerski
J
J
D002824:Chorionic Villi / Q000473:pathology; D005314:Embryonic and Fetal Development / Q000502:physiology*; D004848:Epithelium / Q000473:pathology; D005321:Extraembryonic Membranes / Q000473:pathology; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007752:Obstetric Labor, Premature / Q000473:pathology; D009929:Organ Size / Q000502:physiology; D010920:Placenta / Q000473:pathology*; D011247:Pregnancy; D012016:Reference Values