Triple-branch Stent Graft Placement for the Treatment of Acute DeBakey I Aortic Dissection

Inclusion Criteria: * age\<65 years; * acute DeBakey I aortic dissection is confirmed by CTA; cardiac function is NYHA(New York Heart Association) I-II; * the onset time\< 2 weeks; * the patient or family members can understand the research plan and will participate in this study and provide a written informed consent Exclusion Criteria: * Dissection involved the superior mesenteric artery, renal artery and coronary artery, which affect the body's viscera function seriously. The principal researcher from different centre need judge the patients' condition. * there is a serious complication of nervous system, such as coma, paraplegia, etc * pregnant or lactating women * anyone with severe emphysema, interstitial pneumonia or ischemic heart disease cannot tolerate surgery * subjects with contraindications of heart surgery, anesthesia and extracorporeal circulation * subjects had significant or progressive of heart disease, according to the experience of the researchers,whose life expectancy is less than 1 year, or placement of triple- branched stent graft will induce unacceptable risk to the subjects; * anyone with serious mental illness, drug abuse, alcoholism, prison inmates, a lack of ability to care for, or can not express the informed consent * subjects are incompliance or can't complete the research * anyone is involved in the other clinical trial * other reasons are not suitable for clinical trials, according to the researchers