fig49
Figure 49. A selected video frame from 2D (A) and color Doppler (B) parasternal short-axis view in a neonate with hypoplastic left heart syndrome demonstrating a somewhat constricted ductus arteriosus (DA) prior to the administration of prostaglandin E1. Reproduced from Ref.[21]. DAo: Descending aorta; MPA: main pulmonary artery.
