Endovascular treatment of acute traumatic thoracic aortic injuries: a retrospective analysis of 20 cases.

Abstract

We report our 10-year experience in the endovascular treatment of acute traumatic thoracic aorta rupture at the Hospital Clinic.
We reviewed 20 patients with an acute traumatic thoracic aorta lesion treated with a thoracic endograft between August 1997 and July 2007. All patients had multi-trauma resulting from high-velocity accidents or accidents with great impact. The diagnosis of aortic injury was made on a clinical basis and conventional imaging, confirmed by computed tomographic angiography. The following parameters were studied: age, sex, type and site of the lesion, type of endovascular graft, endovascular operation time, length of stay in the intensive care unit, length of stay in the hospital, immediate and perioperative complications, and mortality. Follow-up data were recorded, consisting of clinical visits, computed tomographic angiography, and plain chest radiographs at regular intervals (3, 6, and 12 months and every subsequent year). The mean follow-up was 58 months.
All endovascular procedures were technically successful, and the mean operating time for the endovascular procedure was 74 minutes (range, 55-130 minutes). We recorded an external iliac lesion during the procedure as an unique immediate complication, and it was corrected by an iliofemoral bypass. The only perioperative death (perioperative mortality rate of 5%) was unrelated to the aortic rupture or stent placement. There was no intervention-related mortality during the follow-up. Postoperative data showed no severe endovascular graft- or procedure-related morbidity. We recorded 2 cases of stent fracture, diagnosed by chest radiograph and computed tomographic angiography, without clinical impact or signs of endoleak.
The short- and mid-term results of immediate endovascular repair of traumatic aortic injuries are promising, especially when compared with open surgical treatment, indicating that endovascular therapy is preferable in patients with multi-trauma and traumatic ruptures of the thoracic aorta. Nevertheless, long-term follow-up data are necessary to assess the overall durability of this procedure, considering the young age of these patients. The long-term follow-up results will determine whether endovascular treatment should replace open surgery as first-line therapy in thoracic aortic injuries.