Echo Dyssynchrony Index (Ts-SD 12 LV) Calculator
Echo Dyssynchrony Index (Ts-SD 12 LV): Explanation and Clinical Context The Echo Dyssynchrony Index, calculated as the standard deviation of time to peak systolic velocity (Ts) across 12 left ventricular segments using tissue Doppler imaging, is a validated measure to quantify mechanical dyssynchrony in patients with heart failure. It was originally described by Yu et al. (2004) and has been used to predict response