When reconstructing an interrupted aortic arch with an aberrant right subclavian artery, careful consideration must be made to protect regional cerebral flow. There are several approaches to cardiopulmonary bypass during aortic arch reconstruction. Here, we describe a case of a 3-month-old female patient with a type B interruption who underwent a right subclavian artery bypass using the right internal thoracic artery to supply sufficient cerebral blood flow throughout the operation. This artery was enlarged as a collateral artery and was beneficial as a bypass graft to ensure cerebral protection.
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