fig26
![Echocardiography: an overview - Part III](https://image.oaes.cc/a251030f-17ae-4989-8cbc-3b1df7232f71/4834.fig.26.jpg)
Figure 26. Selected video frame of continuous wave Doppler across the ventricular septal defect of the same patient as shown in [Figure 25]. Low velocity flow across the ventricular septal defect (VSD) suggests that the defect is non-obstructive. Reproduced from Ref.[19]. Vmax: Maximum velocity; PG: peak gradient; RSVP: right ventricular systolic pressure.