COA

Suprasternal long-axis view of the aorta. Thereis shelf at the site of the ductal junction causingnarrowing

Colour Doppler flow map through the descending aorta shows aliasing at the site of narrowing.

Fig 31

Spectral Doppler recording throughthe descending aorta demonstrating high velocity during systole, andcontinued flow during diastole.

Continuous flow detected in abdominal aorta.

Fig 32

Re-coarctation

Supra-sternal view of the aortic arch in a patient with previous repaired coarctation of theaorta. Note the narrowing at the previous repairedarea. The bright echo from the aortic wall suggestsprevious surgery.

Continuous wave Doppler trace across the coarctation area showing a long diastolic tail.

Fig 33