Tratamento endovascular da dissec？？o cr？nica de aorta tipo B complicada

background: endovascular repair of aortic diseases is a well-established therapeutic alternative for patients with appropriate anatomy and/or high surgical risk, providing lower morbidity and mortality rates. this study aimed at analyzing the outcomes of asymptomatic patients undergoing endovascular treatment of thoracic aortic dissections with aortic diameter > 5.5 cm or endoleaks. technical success, therapeutic success, morbidity and mortality and perioperative complication and reintervention rates were assessed. methods: retrospective study, performed at a reference center from january 2010 to july 2011, which analyzed consecutive patients undergoing endovascular repair of chronic complicated type b aortic dissection according to stanford classification. results: twenty-six patients were treated. mean age was 56.4 ± 7 years and 61.5% were male. technical and therapeutic success rates were 100% and 74%, respectively. perioperative mortality was 7.6% and the mortality rate in the first year of follow-up was 19.3%. the reintervention rate was 15.3%. conclusions: in our study, the endovascular treatment of chronic type b aortic dissection proved to be a feasible method with acceptable perioperative complication rates. therapeutic success and reintervention rates demonstrated the need of a close and careful clinical follow-up of these patients.