Endovascular repair during complex thoracic aortic dissection using a micropore stent graft: Midterm follow-up clinical outcomes.
OBJECTIVE
This study explored the clinical efficacy and hemodynamic effects of the micropore stent graft (MSG) that could promote aortic remodeling and preserve important organ branches.


METHODS
We conducted a retrospective analysis of 26 patients who underwent endovascular repair using an MSG for DeBakey types I and III TAD at our center between December 2014 and December 2017. The main efficacy parameters were rupture of the false lumen or dissection-related death, conversion to open repair, secondary reintervention, branch vessel patency, and the hemodynamic effects of TAD at 12 months.


RESULTS
Dissection rupture, dissection-related mortality, conversion to open repair, and secondary reintervention rates at 12 months were 0, 3.9, 0, and 0%, respectively. In the 24 patients with more than 6 months of follow-up, micropore stents were implanted to cover 39 openings in aortic arch branches, 91.7% (22/24) presented with complete thrombosis in the false lumen, 8.3% (2/24) presented with partial thrombosis in the false lumen, 35.2% (6/17) presented with a thrombus in the false lumen that was completely absorbed, and all 39 branches were patent. After surgery, pressure peak value and fluctuation along with the degree and range of unstable blood flow in the aortic lumen decreased.


CONCLUSIONS
For type I and type III thoracic artic dissection, endovascular treatment with an MSG may be a safe and effective treatment option with a good midterm outcome.
['Wang|Zhe|Z|', 'Wang|Cheng|C|', 'Li|Fenghe|F|', 'Zhao|Yu|Y|0000-0003-4035-0825']
D000328:Adult D000368:Aged D000784:Aneurysm, Dissecting D001013:Aorta, Thoracic D017545:Aortic Aneurysm, Thoracic D001807:Blood Vessel Prosthesis D019917:Blood Vessel Prosthesis Implantation D057510:Endovascular Procedures D005260:Female D006439:Hemodynamics D006801:Humans D008297:Male D008875:Middle Aged D016062:Porosity D011183:Postoperative Complications D011474:Prosthesis Design D012189:Retrospective Studies D012307:Risk Factors D015607:Stents D013499:Surface Properties D013997:Time Factors D016896:Treatment Outcome D066253:Vascular Remodeling
endovascular repair thoracic aortic dissection micropore stent graft hemodynamics patency rate