fig29

Figure 29. (A) A high tricuspid regurgitant Doppler flow velocity is shown and is suggestive of elevated pulmonary artery pressure in a neonate with the infra-diaphragmatic type of total anomalous pulmonary venous connection. (B) Color Doppler flow mapping demonstrating right-to-left shunting across the atrial septum. Reproduced from Ref.^[21]. RA: Right atrium; LA: left atrium.