Morphologic features of the interrupted aortic arch in Chinese patients

In conclusion, type A IAA was predominant in our series. No correlation was seen between the position of the ventricular septal defect and type of interruption. The occurrence of subaortic stenosis was not different in the conal, perimembranous, and muscular ventricular septal defect groups. Both conoventricular malalignment and hypertrophic anterolateral muscle bundle of the left ventricle contribute to the occurrence of subaortic stenosis, which was seen more often in our series. The presence of an aberrant subclavian artery may be a harbinger of subaortic stenosis in conjunction with aortic interruption.