Flow analysis of steady state forward flow of aortic valve prostheses using Particle Image Velocimetry

The ViVitro Labs pulse duplicator system in its standard configuration was used to obtain boundary conditions in support of steady flow Stereo-PIV hydrodynamic assessment of TAVI valve steady forward flow conditions through a TAVR "In order to use forward flow rates for the steady state measurements, flow rates from pulsatile measurements with a pulse duplicator system (ViVitroInc., Victoria, Canada) were analysed with respect to the flowrate during peak systole. A cardiac output of CO = 2.5 l/min was set at a constant heart rate (f = 70 bpm) using the pulse duplicator system in order to create different measurement scenarios and to derive the corresponding Reynolds numbers (Re)"