title: Ultrasonic measurements of umbilical blood flow in normal and complicated pregnancies.
mesh_terms: D000818:Animals; D001314:Auscultation / Q000379:methods; D001783:Blood Flow Velocity; D002302:Cardiac Output; D005260:Female; D005312:Fetal Blood / Q000502:physiology; D005317:Fetal Growth Retardation / Q000503:physiopathology; D005311:Fetal Hypoxia / Q000503:physiopathology; D006801:Humans; D008431:Maternal-Fetal Exchange; D010920:Placenta / Q000098:blood supply*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000503:physiopathology*; D012756:Sheep; D014463:Ultrasonography; D014470:Umbilical Cord / Q000502:physiology; D014471:Umbilical Veins / Q000503:physiopathology