Background: Complicated type B aortic dissections require surgery or thoracic endovascular aortic repair
(TEVAR). In this study, we sought to explore the early and mid-term clinical efficacy of TEVAR treatment
for Stanford complicated type B aortic dissection.
Methods: From January 2012 to October 2017, the medical records and the aortic imaging data of 172
consecutive patients treated by TEVAR were retrospectively reviewed for statistical analysis. Aortic
remodeling was evaluated based on the preoperative and one-year postoperative followed-up aortic CTA
scan results. We analysed the diameters of the total aortic lumens, True and False lumens diameter and the
thrombosis status at different five levels along the descending aorta.
Results: The primary technical success rate was 97%, and the clinical success rate was 94.8%. At 1-year of
aortic CTA follow-up after TEVAR, the true lumen diameter at the stented descending thoracic aorta
increased significantly, the false lumen diameter significantly reduced. The remodeling process was stable
with mild changes of true lumen increase and false lumen reduction at the unstented distal part of the
descending thoracic and the abdominal aorta.
Conclusion: This study confirmed that TEVAR treatment for complicated type B aortic dissection
has a low mortality rate of mid-term follow-up outcomes. TEVAR stabilizes the size of the aorta and
precipitates in FL thrombosis. However, FL in the abdominal aorta still patented and must be
carefully observed for further long-term events.