Video 21.5 Tight preductal coarctation of the aorta (COA) with a very restrictive arterial duct in a 1-day-old critically ill neonate
Tight preductal coarctation of the aorta (COA) with a very restrictive arterial duct in a 1-day-old critically ill neonate. Turbulent, high-velocity flow exceeding the Nyquist limit of 82 cm/s can be detected in both the severe isthmic narrowing and the patent arterial duct (PDA).