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Change of Doppler parameter after pneumatic compression. TVGpeak and TVPGmean were increased after pneumatic compression. On the other hand, Doppler index (TVILVOT/TVIAV) and calculated EOA did not change. TVILVOT: time velocity integral of Doppler at LV outflow tract, TVIAV: time velocity integral of trans-aortic valvular Doppler, EOA: effective orifice area, AV Vmax: aortic valve maximal systolic velocity, AVA: aortic valve area.
