Tetralogy of Fallot Associated With Right Aortic Arch and Isolated Left Brachiocephalic Artery
Maya Hammonds1, Thomas M Knapp1, Peace Madueme2
1University of Central Florida College of Medicine, Orlando, FL, USA.
Abstract:
A newborn presented with tetralogy of Fallot (TOF), right aortic arch (RAA), and isolated left brachiocephalic artery. The RAA supplied the right common carotid artery, right vertebral artery, and right subclavian artery, in that order. The left common carotid and left subclavian arteries were in continuity with no aortic origin. Ultrasound demonstrated retrograde flow in the left vertebral artery supplying antegrade flow to the diminutive left subclavian artery (ie, "steal phenomenon"). The patient underwent repair of TOF without intervention on the left common carotid or left subclavian arteries and is being followed conservatively.
Related Concept Videos
The Arch of Aorta
Encircling the heart, the coronary arteries form a ring-like structure before...
Thoracic Aorta
Aortic Regurgitation I: Introduction
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
The Aorta
The average diameter of the aorta is approximately 2-3 cm, but the size can vary depending on the section of the aorta and the individual's age, sex, and body size. The aorta is...
Coronary Circulation
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...


