The placenta as a determinant of fetal well-being in normal and abnormal equine pregnancies.

摘要: One hundred twenty-four horse placentas were evaluated according to gross appearance, weight and surface area. Grossly abnormal photographed, histological sections taken from appearing areas, representative areas (pregnant horn, non-pregnant body cervical pole) in both normal placentas. Information about the resulting foals was obtained correlations examined. Histological reviewed related foals. Four fresh infused with dyes ascertain blood supply various areas. Foal statistically allantochorionic area weight. When placental divided by foal gestational age, a statistical (P less than 0.0001 r = 0.829) relationship emerged. Long cords seen frequently fetal demise. abnormalities placenta highly associated demise or abnormalities, only 2 Thoroughbred resulted 23 exhibiting histology. Among ponies, same held, 3 ponies delivered 9 Normal offspring most cases. Perfusion studies indicated that, four studied, one umbilical artery supplied whereas other pregnant horn. The had mixed arteries. This study feto-placental unit terms of measurements histology outcome. presence appearance appeared be more closely abnormality percentage involved process. More information is needed before can processes.