right aortic arch
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Right aortic arch: may be associated with vascular rings and cyanotic heart disease and may complicate the repair of tracheoesophageal . Right Aortic Arch Types At least five different types Only two of importance Mirror Image Type ? Type I Aberrant left subclavian ? Type II
General Recognized by leftward displacement of barium-filled esophagus Of air-filled trachea Aortic knob is absent from left side Aorta descends on right Para-aortic stripe returns to left side of spine just above diaphragm Mirror-image type almost always has associated CHD Usually Tetralogy of Fallot Aberrant Left Subclavian type rarely has associated CHD Most common variety of right arch
Type 1?Mirror Image Type Secondary to interruption of left arch just distal to ductus arteriosis Associated with congenital heart disease 98% of time X-ray Findings No posterior impression on trachea or barium-filled esophagus Heart is usually abnormal in size or shape Aorta descends on right
Type ll?Aberrant Left Subclavian Secondary to interruption of left aortic arch between LCC and LSC arteries Associated with cardiac defects 5-10% of the time Tetralogy of Fallot most often (71%) ASD or VSD next most often (21%) Coarctation of aorta rarely (7%) Anomalous left subclavian artery (retroesophageal and retrotracheal) Aorta descends on right fistula