title: [Consideration of hemodynamics in the intervillous space of the placenta (author's transl)].
abstract: Using Freese's hemodynamic model, we calculated the speed and pressure distribution in the villi-free area of the cotyledon. The Navier-Stokes equation was converted approximately into Reynod factors. The villi-free area was described as circular diffusor. On the basis of our computations, we assume that a predominately laminar flow occurred in the intervillous space; we considered an angular apearature of between 10 and 40 degrees to be physiological. In this area, pressure distribution is homogenous. The model-theoretical considerations presented here substantiate Freese's conception.
mesh_terms: D001783:Blood Flow Velocity; D005260:Female; D006801:Humans; D008954:Models, Biological; D010920:Placenta / Q000098:blood supply*; D011247:Pregnancy; D012039:Regional Blood Flow
vernacular_title: Uberlegungen zur Haemodynamik im interfillösen Raum der Placenta.