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  • Effects of Distal Tears on Aortic Remodeling after TEVAR for Stanford Type B Aortic Dissection in Subacute Period

    ObjectiveTo investigate the effect of distal tears on postoperative aortic remodeling after Thoracic Endovascular Aortic Repair (TEVAR) for the patients with subacute stage of Stanford type B aortic dissection.MethodsForty three cases with Stanford type B aortic dissection, admitted in Anhui Provincial Hospital from July 2011 to April 2015, who underwent TEVAR to repair the proximal aortic entrance tear, after which the blood reflex from distal tears were still observed were analyzed retrospectively. According to the number of heart volume required to fill the two groups, group A (≤2 heart rate) group B (>2 heart rate), We then assessed the changes of the true and false lumen area and analyzed the effects of direction of blood flow and the number of heart rate to fill the false lumen on formation of false lumen thrombosis in the period of 3–24 months.ResultsAll the stents were successful implanted. There was a statistically significant difference in lumen area between the two groups before and after surgery, and univariate analysis showed that the direction of distal rupture of blood flow into the false lumen had no effect on postoperative aortic remodeling (P<0.05), but postoperative hypertension (≥140/90 mmHg) slows down the formation of false lumen thrombosis.ConclusionPatients had entrance tear in the distal of aortic, still broken and faster flow after TEVAR stent-graft implantation in the proximal closed entrance tear. Blood pressure should be strictly controlled and close follow-up also needed, meanwhile, the distal entrances can be closed the same period if there is a faster flow from them.

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