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Figure 6: The figure showing the distinguishing features of a valvular gradient (a) and a subvalvular LVOT gradient (b) on continuous-wave Doppler profile, wherein a symmetrical envelope (a) characterizes a valvular obstruction and a “dagger”-shaped envelope (b) signifies a LVOTO, with the gradients peaking in late systole. LVOTO: Left ventricular outflow tract obstruction

Figure 6: The figure showing the distinguishing features of a valvular gradient (a) and a subvalvular LVOT gradient (b) on continuous-wave Doppler profile, wherein a symmetrical envelope (a) characterizes a valvular obstruction and a “dagger”-shaped envelope (b) signifies a LVOTO, with the gradients peaking in late systole. LVOTO: Left ventricular outflow tract obstruction