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April 2009, Volume 113, Issue 4; Obstetrics & Gynecology. 113(4):860-865, April 2009
The first segment of the video shows animated anatomy of the fetal circulation, highlighting the ductus venosus. The next segment shows a sonographic view of ductus venosus blood flow in a first-trimester fetus. The third segment shows normal ductus venosus blood flow velocity waveforms. The last segment shows reversed a-wave blood flow. Video courtesy of the Fetal Medicine Foundation. See the related article by Maiz et al (Obstet Gynecol 2009;113:860-5).