[Recent physiologic and pathophysiologic findings on fetal circulation].
Venous return of the fetal circulation consists of 70% blood from the lower body and of 30% blood from the upper body. Blood of the left V. hepatica contains more oxygen than that of the right hepatic vein. This rather well oxygenated blood from the left hepatic lobe joins the blood of the Ductus venosus, carrying high concentrations of O2 and glucose predominantly to the left ventricle, Aorta ascendens, and Truncus brachiocephalicus. Less oxygen saturated blood of the right hepatic lobe together with the venous return of V. cava superior reaches the right ventricle via the tricuspid valve, then the Ductus arteriosus and Aorta descendens. The hepatic microcirculation seems to be of importance for regulations of the fetal venous return. However, the supply of organs with oxygen and nutrients is mainly dependent on regional vascular resistances.
Schwartze
H
H
Institut für Pathologische Physiologie, Karl-Marx-Universität, Leipzig.
D004374:Ductus Arteriosus, Patent / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008431:Maternal-Fetal Exchange; D010100:Oxygen / Q000097:blood*; D011247:Pregnancy
D010100:Oxygen
Neuere physiologische und pathophysiologische Befunde zum fetalen Kreislauf.