fig52
![Echocardiography: an overview - Part III](https://image.oaes.cc/a251030f-17ae-4989-8cbc-3b1df7232f71/4834.fig.52.jpg)
Figure 52. Selected video frames from subcostal views of the atrial septum in a neonate with hypoplastic left heart syndrome demonstrating a septal aneurysm (SAnu) (A, B), turbulent flow across the patent foramen ovale (PFO) (arrow in B), and a high-velocity flow across the PFO (C). A Doppler-estimated gradient over 10 mmHg (insert in C) and turbulent flow (B) suggest a restrictive PFO. Reproduced from Ref.[21]. LA: Left atrium; RA: right atrium.