Transcatheter valve-in-valve implantation for failing bioprosthetic valvesAli N Azadani
Division of Cardiothoracic Surgery, University of California at San Francisco UCSF Medical Center, San Francisco, CA, USA
Future Cardiol 6:811-31. 2010
..In this article, we provide an overview of transcatheter valve implantation in failing bioprostheses with an emphasis on the aortic position...
- Valve-in-valve hemodynamics of 20-mm transcatheter aortic valves in small bioprostheses
Ali N Azadani
Department of Surgery, University of California at San Francisco Medical Center UCSF and San Francisco Veterans Affairs Medical Center SFVAMC, San Francisco, California 94143 0118, USA
Ann Thorac Surg 92:548-55. 2011
..The study objective was to determine (1) if 20-mm TAVs provide acceptable hemodynamics in small degenerated bioprostheses and (2) the effect of TAV spatial orientation on valvular hemodynamics and coronary flows...
- Biomechanical comparison of human pulmonary and aortic roots
Ali N Azadani
Department of Surgery, University of California, San Francisco, CA, USA
Eur J Cardiothorac Surg 41:1111-6. 2012
..However, limited data are available on mechanical properties of fresh human pulmonary roots. The aim of this study was to compare mechanical properties of fresh human pulmonary and aortic roots prior to the Ross operation...
- Valve-in-valve implantation using a novel supravalvular transcatheter aortic valve: proof of concept
Ali N Azadani
Department of Surgery, University of California at San Francisco Medical Center, San Francisco, California 94143, USA
Ann Thorac Surg 88:1864-9. 2009
..The objective of this study was to develop a new transcatheter valve that would provide good hemodynamics within degenerated bioprostheses...
Regional mechanical properties of human pulmonary root used for the Ross operationAli N Azadani
Department of Surgery, University of California at San Francisco Medical Center UCSF, San Francisco, CA 94143 0118, USA
J Heart Valve Dis 21:527-34. 2012
..At present, limited data are available on the mechanical properties of fresh human pulmonary roots; hence, the study aim was to determine the regional mechanical properties of human pulmonary roots...
- Transcatheter aortic valves inadequately relieve stenosis in small degenerated bioprostheses
Ali N Azadani
Department of Surgery, University of California at San Francisco Medical Center and San Francisco Veterans Affairs Medical Center, San Francisco, CA, USA
Interact Cardiovasc Thorac Surg 11:70-7. 2010
..We hypothesized that current 23 mm TAVs would not completely relieve severe stenosis in small bioprosthetic valves. The objective of this study was to study the hemodynamics of TAVs in degenerated bioprostheses...
- Finite element modeling of the pulmonary autograft at systemic pressure before remodeling
Peter B Matthews
Department of Surgery, University of California at San Francisco Medical Center, San Francisco, CA 94103 0118, USA
J Heart Valve Dis 20:45-52. 2011
..The study aim was to develop a realistic finite element (FE) model of the autograft, and to perform simulations at systemic pressure to determine wall stress distribution immediately after the Ross operation...
- Energy loss due to paravalvular leak with transcatheter aortic valve implantation
Ali N Azadani
Department of Surgery, University of California at San Francisco Medical Center, San Francisco, California 94143, USA
Ann Thorac Surg 88:1857-63. 2009
..However, mild paravalvular leakage was seen after TAV implantation. The present study quantifies energy loss during the entire cardiac cycle to assess the impact of TAV paravalvular leaks on the ventricle...
- Comparison of porcine pulmonary and aortic root material properties
Peter B Matthews
Department of Surgery, University of California at San Francisco Medical Center, San Francisco, California 94143, USA
Ann Thorac Surg 89:1981-8. 2010
..The objective of this study was to determine stiffness across a wide range of strain and compare nonlinear material properties of corresponding regions of native aortic and pulmonary roots...
- Operative risks and survival in veterans with severe aortic stenosis: surgery versus medical therapy
Sam Chitsaz
Department of Surgery, University of California San Francisco Medical Center, and San Francisco Veterans Affairs Medical Center, San Francisco, California 94143 0118, USA
Ann Thorac Surg 92:866-72. 2011
..In this study, we examined reasons for medical management of aortic stenosis in relation to operative risks and outcomes for veterans with and without valve replacement...
- Comparison of mechanical properties of human ascending aorta and aortic sinuses
Ali N Azadani
Department of Surgery, University of California at San Francisco Medical Center and San Francisco Veterans Affairs Medical Center, San Francisco, California 94143 0118, USA
Ann Thorac Surg 93:87-94. 2012
..The main objective of this study was to investigate biomechanics of fresh human ascending aorta and aortic sinuses and compare nonlinear material properties of these regions...
- Mechanical properties of surgical glues used in aortic root replacement
Ali N Azadani
Department of Surgery, University of California at San Francisco Medical Center, San Francisco, California 94143, USA
Ann Thorac Surg 87:1154-60. 2009
..We determined the material properties of four common commercial glues, comparing them with known properties of aortic root replacements...
