[Sequence of vascular closing mechanisms beginning post partum].
Ductus arteriosus, ductus venosus and umbilical vessels were studied in a group of 120 children deceased in perinatal period and 30 persons deceased at the age of 1 month till 90 years. Time sequence of evident morphological closing of vessels was analyzed. A contraction of media and proliferation of intima finished at the end of the 1st month were found in all of them except in ductus arteriosus where it finished at the end of the 3rd month. Dystrophic changes of proliferating structures were found in following months. Closing of ductus arteriosus started in an antenatal phase by pillow-like proliferation of intima. A primary thrombosis closing the vessels was extremely rare. There was not any difference between immature and hypotrophic or mature and eutrophic neonates.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004373:Ductus Arteriosus / Q000033:anatomy & histology* / Q000196:embryology / Q000502:physiology; D004374:Ductus Arteriosus, Patent / Q000473:pathology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008875:Middle Aged; D014469:Umbilical Arteries / Q000033:anatomy & histology* / Q000473:pathology / Q000502:physiology; D014471:Umbilical Veins / Q000033:anatomy & histology* / Q000473:pathology / Q000502:physiology
Sekvencia cievnych uzáverových mechanizmov nastupujúcich post partum.