Fig. 7From: Transesophageal echocardiography in orthotopic liver transplantation: a comprehensive intraoperative monitoring toolNormal triphasic hepatic Doppler waveform. The four waveforms constituting the normal spectral Doppler waveform are indicated: the A wave lies below the baseline (retrograde component); the S and D waves peak above the baseline and are caused by anterograde blood flow toward the right heart; and the V wave, a transitional wave, may peak just below or above the baselineBack to article page