aortic isthmus

Correlation between prenatal velocity waveforms in the aortic isthmus and neurodevelopmental outcome between 2 and 4 years of age.

An angiogram will often show an irregular outpouching beyond the takeoff of the left subclavian artery at the aortic isthmus, representing an aortic pseudoaneurysm caused by the trauma.

Doppler interrogation of atrio-ventricular and semi lunar valves is required, with specific interrogation of the ductal diverticulum, foramen ovale and atrial septal region and aortic isthmus.