Abstract
Transcatheter aortic valve implantation (TAVI) has emerged as an alternative to aortic valve replacement. Previous studies have used different methods for the measurement of the prosthetic valve effective orifice area (EOA) following TAVI. Factors influencing the EOA of transcatheter valves are unknown. The objectives were to compare different Doppler-echocardiographic methods for the measurement of prosthetic valve EOA following TAVI and to determine the factors influencing the EOA of transcatheter balloon expandable valves.
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