title: Absence of end diastolic frequencies in umbilical artery: a sign of fetal hypoxia and acidosis.
mesh_terms: D000138:Acidosis / Q000175:diagnosis*; D001783:Blood Flow Velocity; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D005315:Fetal Diseases / Q000175:diagnosis*; D005317:Fetal Growth Retardation / Q000175:diagnosis; D005311:Fetal Hypoxia / Q000175:diagnosis*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010100:Oxygen / Q000097:blood; D011247:Pregnancy; D014463:Ultrasonography; D014469:Umbilical Arteries / Q000503:physiopathology*
chemical_list: D010100:Oxygen