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Assessment of effective orifice area of prosthetic aortic valves with Doppler echocardiography: An in vivo and in vitro study  Odd Bech-Hanssen, MD, PhDa,

Published byMieczysław Kozieł Modified over 5 years ago

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Presentation on theme: "Assessment of effective orifice area of prosthetic aortic valves with Doppler echocardiography: An in vivo and in vitro study  Odd Bech-Hanssen, MD, PhDa,"— Presentation transcript:

1 Assessment of effective orifice area of prosthetic aortic valves with Doppler echocardiography: An in vivo and in vitro study  Odd Bech-Hanssen, MD, PhDa, Kenneth Caidahl, MD, PhDa, Ingemar Wallentin, MD, PhDa, Per Ask, PhDb, Bengt Wranne, MD, PhDc  The Journal of Thoracic and Cardiovascular Surgery  Volume 122, Issue 2, Pages (August 2001) DOI: /mtc Copyright © 2001 American Association for Thoracic Surgery Terms and Conditions

2 Fig. 1 Schematic representation of a pullback pressure recording in the central orifice of a St Jude Medical prosthetic valve from the ventricular chamber (1) to the aorta (3). Calculations of peak catheter gradients, pressure recovery, and the net pressure gradient are illustrated. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /mtc ) Copyright © 2001 American Association for Thoracic Surgery Terms and Conditions

3 Fig. 2 Distribution of EOA grouped by prosthesis size of the St Jude Medical (left) and Omnicarbon (right) valves. Results are shown for the in vivo (●) and in vitro (○) studies. Bars indicate mean ± SD. Boxes show the geometric orifice area. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /mtc ) Copyright © 2001 American Association for Thoracic Surgery Terms and Conditions

4 Fig. 3 Peak catheter gradients versus net catheter gradients in the St Jude Medical (SJM) and Omnicarbon (OMNI) valves. Mean difference between peak catheter gradient and net catheter gra-dient is 11.6 ± 6.3 mm Hg in St Jude Medical and 3.4 ± 1.5 mm Hg in Omnicarbon valves. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /mtc ) Copyright © 2001 American Association for Thoracic Surgery Terms and Conditions

5 Fig. 4 Relationship between peak EOASeparate and net catheter gradients. The St Jude Medical (SJM) (y = –20.7x , R 2 = 0.69, P =.0001) and Omnicarbon (OMNI) (y = –28.3x , R 2 = 0.65,P =.0001) valves had a comparable effective orifice area (EOA) , but the Omnicarbon valve had higher net catheter gradients than the St Jude Medical valve. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /mtc ) Copyright © 2001 American Association for Thoracic Surgery Terms and Conditions

6 Fig. 5 Pressure profiles obtained from catheter pullback in the central and side orifices of the St Jude Medical valve (size 23, left ) and in the major and minor orifices of the Omnicarbon valve (size 21, right ). Arrows indicate the distal part of the prosthesis. In the St Jude Medical valve the pressure drop is most pronounced in the proximal portion of the central orifice, with marked pressure recovery within the central tunnel. The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /mtc ) Copyright © 2001 American Association for Thoracic Surgery Terms and Conditions

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