Analysis On The Application Of Chimney Technique In Endovascular Aortic Repair Of Type ? Aortic Dissection

Objective: To explore the clinical efficacy of endovascular aortic repair plus chimney technique in the treatment of type ? aortic dissection involving the left subclavian artery.Methods: From February 2013 to October 2016,29 patients with type ? aortic dissection involving major branch vessels make a retrospective study in the Fifth Affiliated Hospitalof Xinjiang Medical University.Divided into experimental group(TEVAR combined with "chimney" stent implantation group)15 cases and control group(simple TEVAR treatment group)14 cases,the patients in the two groups were followed up for 3,6,12 months after operation.The postoperative complications such as endoleak,retrograde A type dissection,left upper limb muscle strength and vertigo symptoms were observed.Result: Two groups of patients with covered stents and chimney stents were implanted successfully,the success rate was 100%.All patients were followed up for3,6,12 months.The patency rate of aortic covered-stents in the experimental group and the control group was 100%.In the control group,there were 1 cases of ? type endoleak,1cases of retrograde type A aortic dissection,2 cases of the left upper limb muscle weakness,2 cases of vertigo symptoms.In the experimental group,type I endoleak occurred in the case of 1 cases,chimney stent displacement in 1 cases(P<0.05).Conclusion:Applicating the chimney technology to open the left subclavian artery and other important branch in type ? aortic dissection aneurysm cavity repair has good effect on reducing short-term postoperatively complications in patients.