Evaluation of the Castor Single Branch Stent Graft in Treatment of Acute Aortic Syndrome

Immediate post-operative technique success

Immediate technical success is defined as successful delivery of the aortic and branching stent graft conveyors to their predetermined position, accurate positioning and successful deployment of the stent, safe removal of the delivery device outside the body, absence of Type I and III endoleaks on angiography at the end of the procedure, and patent branch stents.

All-cause mortality and major

All-cause mortality includes aortic mortality, non-aortic mortality, and mortality from unknown causes.

Major device/procedure-related adverse events of post-operation as assessed by computer tomography angiography

Major device or procedure related major adverse events as assessed by computer tomography angiography included: death, dissection or aneurysm rupture, new myocardial infarction requiring intervention (percutaneous transluminal coronary angioplasty, bypass), retrograde type A aortic dissection, endoleaks, new disabling stroke, paraplegia, new hepatic infarction, new chronic renal insufficiency/renal failure requiring dialysis, lower limb ischemia (increase in Rutherford classification), access vessel thrombosis or rupture, conversion to open surgery, and stent migration, fracture or migration, stent graft infection, stent graft-induced new entry tear.

Aortic remodeling results as assessed by computer tomography angiography (the size of the true and false lumen of aorta, and the thrombosis degree of the false lumen of aorta)

Compare the results of computer tomography angiography before operation and on the first-, 6th- and 12th-month post operation, the expansion of the true lumen and the thrombosis of the false lumen at the coverage of the stent graft to determine whether the blood vessel is successfully remodeled

Re-intervention during follow-up

Re-intervention result from device/procedure-related adverse events.