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- W1980529064 abstract "Background: Pressure recovery is not taken into account when calculating transprosthetic gradients after mechanical valve replacement using Doppler echocardiography. This may lead to underestimation of valvular performance. Methods: Simultaneous measurement of Doppler and direct transprosthetic gradients was performed in a circulatory mock loop simulator with physiologic parameters at different heart rates and cardiac outputs for small-sized aortic Omnicarbon™ tilting disc valves (19 - 21 mm). Results: In all adjustments the Doppler gradient significantly overestimated the net transvalvular gradient. The amount of pressure recovery averaged 59.3 %. Conclusions: Doppler echocardiography does not allow for pressure recovery, which is a significant phenomenon in the hemodynamic function of the Omnicarbon™ tilting disc valve. Valve performance is much better than expected from Doppler gradients." @default.
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- W1980529064 date "2006-04-26" @default.
- W1980529064 modified "2023-09-23" @default.
- W1980529064 title "Impact of Pressure Recovery in the Evaluation of the Omnicarbon™ Tilting Disc Valve" @default.
- W1980529064 doi "https://doi.org/10.1055/s-2005-873061" @default.
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