Isolated right subclavian artery, interrupted aortic arch, and ventricular septal defect.

Isolated subclavian artery is extremely rare. The clinical and hemodynamic manifestations depend on the state of ductus arteriosus, pulmonary vascular resistance, and associated intracardiac and extracardiac malformations. We discuss 2 such cases in association with an interrupted aortic arch and ventricular septal defect.