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To evaluate national outcomes after open repair of descending thoracic aortic aneurysm (DTA).The DTA repairs were identified from the NIS database from 1988-2003 by ICD9 codes for thoracic vascular resection and replacement (38.45) and a diagnosis of intact (441.1) or ruptured (441.2) thoracic aortic aneurysm; excluding thoraco-abdominal aneurysm, abdominal aortic aneurysm repair, cardioplegia, hypothermia,...