Kleyburg-Linkers, V.E.

aortic aortic regurgitation valve patient regurgitation replacement allograft technique implantation reoperation autograft tissue valves aortic root replacement echocardiographic diameter jet diameter ratio follow-up method analysis aortic valve replacement subcoronary ann thorac surg severity intercept operation jet length method subcoronary implantation technique tissue subcoronary implantation determinant table examination slope model autograft root replacement valve failure root replacement ratio curve circulation van herwerden failure thorac echocardiographic examinations heart 0.01 surgeon donor durability range regression 0.04 allograft root replacement grade aortic valverelated reoperation doppler progression regression line 0.00 length change group willem implantation technique color covariable position variable pathology figure characteristic function experience survival homograft effect risk factor echocardiographic data adult root replacement technique