1Bortolotti U, Scioti G, Milano A, et al. Enlargement of the Aortic Annulus with Glutaraldehyde-Fixed Bovine Pericardium during Aortic Valve Replacement. J Heart Valve Dis, 1998,7(3):299.
2Roedler S, Moritz A, Wutte M, et al. The CarboMedics "Top Hat" supra-annular prosthesis in the small aortic root. J Card Surg, 1995, 10(3):198.
3De Canniere D, Jansens JL, Unger P, et al. Left ventricular outflow tract obstruction after mitral valve replacement,Ann Thorac Surg, 1997,64(6):1805.
4Struber M, Campbell A, Richard G, et al. Hydrodynamic performance of CarboMedics valves in double valve replacement.J Heart Valve Dis, 1994,3:667.
2Struber M,Campbell A,Richard G,et al.Hydrodynamic performance of Carbomedics valves in double valve replacement.J Heart Valve Dis,1994,3(6):667-692.
3David TE,Uden DE.Aortic valve replacement in adult patients with small aortic annuli.Ann Thorac Surg,1983,36:577-583.
4He GW,Grunkemeier GL,Gately HL,et al.Up to thirtyyear survival after aortic valve replacement in the small aortic root.Ann Thorac Surg,1995,59:1056-1062.
5Rahimtoola SH. The problem of valve prosthesis-patient mismatch[J]. Circulation, 1978, 58(1):20-24.
6Koedler S, Czerny M, Neuhauser J, et al. Mechanical aortic valve pros-theses in the small aortic root: Top Hat versus standard CarboMedics aortic valve[J]. Ann Thorac Surg, 2009, 87(2):676-677.
7Westaby S, Horton M, Jin XY, et al. Survival advantage of stentless aortic bioprostheses[J]. An Thorac Surg, 2000, 70 (3):785-791.
