15 years experience with 615 homograft and autograft aortic valve replacements

1980 ◽  
Vol 3 (3) ◽  
pp. 168-172 ◽  
Author(s):  
W.H. Wain ◽  
R. Greco ◽  
A. Ignegeri ◽  
E. Bodnar ◽  
D.N. Ross
Keyword(s):  
Aortic Valve ◽  
Valve Replacement ◽  
Pulmonary Valve ◽  
Alternative Methods ◽  
Homograft Valve ◽  
Long Term Performance ◽  
Term Performance

Homograft valve replacement of the diseased aortic valve with a homologous aortic valve inserted in the sub-coronary position was first performed in July 1962 (Ross 1962). The procedure of transferring the patients autologous pulmonary valve to the aortic position has been used since 1967 (Ross 1967). The long term performance of homograft valves has not been regarded as satisfactory in some centres (Cope-land 1977, Anderson & Hancock 1977) whereas others have shown it to be an excellent valve replacement (Barratt-Boyes, 1977, Bodnar et al 1979). The differing experiences may be the results of alternative methods of sterilization, preservation and surgical insertion. This paper presents information on isolated aortic valve replacements with either homograft or autograft valves over a 15 year period.

Ross Procedure: How to Do It and How to Teach It

2019 ◽  
Vol 10 (5) ◽  
pp. 624-627
Author(s):  
Jeremy L. Herrmann ◽  
Amanda R. Stram ◽  
John W. Brown
Keyword(s):  
Aortic Valve ◽  
Aortic Stenosis ◽  
Aortic Valve Replacement ◽  
Valve Replacement ◽  
Prosthetic Valve ◽  
Pulmonary Valve ◽  
Prosthetic Graft ◽  
Ascending Aorta ◽  
Ross Procedure

Prosthesis choice for aortic valve replacement (AVR) in children is frequently compromised by unavailability of prostheses in very small sizes, the lack of prosthetic valve growth, and risks associated with long-term anticoagulation. The Ross procedure with pulmonary valve autograft offers several advantages for pediatric and adult patients. We describe our current Ross AVR technique including replacement of the ascending aorta with a prosthetic graft. The procedure shown in the video involves an adult-sized male with a bicuspid aortic valve, mixed aortic stenosis and insufficiency, and a dilated ascending aorta.

Long-term Assessment of Aortic Valve Replacement with Autologous Pulmonary Valve

1985 ◽  
Vol 39 (3) ◽  
pp. 238-242 ◽  
Author(s):  
A. Robles ◽  
M. Vaughan ◽  
J.K. Lau ◽  
E. Bodnar ◽  
D.N. Ross
Keyword(s):  
Aortic Valve ◽  
Aortic Valve Replacement ◽  
Valve Replacement ◽  
Pulmonary Valve

scholarly journals Characterization of Turbulent Flow Behind a Transcatheter Aortic Valve in Different Implantation Positions

2022 ◽  
Vol 8 ◽  
Author(s):  
Leonardo Pietrasanta ◽  
Shaokai Zheng ◽  
Dario De Marinis ◽  
David Hasler ◽  
Dominik Obrist
Keyword(s):  
Aortic Valve ◽  
Flow Field ◽  
Turbulent Flow ◽  
Aortic Root ◽  
Flow Topology ◽  
Transcatheter Aortic Valve ◽  
Long Term Performance ◽  
Term Performance

The development of turbulence after transcatheter aortic valve (TAV) implantation may have detrimental effects on the long-term performance and durability of the valves. The characterization of turbulent flow generated after TAV implantation can provide fundamental insights to enhance implantation techniques. A self-expandable TAV was tested in a pulse replicator and the three-dimensional flow field was extracted by means of tomographic particle image velocimetry. The valve was fixed inside a silicone phantom mimicking the aortic root and the flow field was studied for two different supra-annular axial positions at peak systole. Fluctuating velocities and turbulent kinetic energy were compared between the two implantations. Velocity spectra were derived at different spatial positions in the turbulent wakes to characterize the turbulent flow. The valve presented similar overall flow topology but approximately 8% higher turbulent intensity in the lower implantation. In this configuration, axial views of the valve revealed smaller opening area and more corrugated leaflets during systole, as well as more accentuated pinwheeling during diastole. The difference arose from a lower degree of expansion of the TAV's stent inside the aortic lumen. These results suggest that the degree of expansion of the TAV in-situ is related to the onset of turbulence and that a smaller and less regular opening area might introduce flow instabilities that could be detrimental for the long-term performance of the valve. The present study highlights how implantation mismatches may affect the structure and intensity of the turbulent flow in the aortic root.

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