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Responses of CRT at multiple pacing sites in terms of a. the peak LV pressure and IMP; b. (dP/dt)max and LV EF; c. QLAD and QLCX; and d. ecc, ell, WLAD and WLCX. “b-epi”, “b-endo”, “b-ant”, “b-inf”, “m-lat”, “m-ant” and “m-inf” denote “basal-epicardium”, “basal-endocardium”, “basal-anterior epicardium region”, “basal-inferior epicardium region”, “mid-lateral epicardium region”, “mid-anterior epicardium region”, “mid-inferior epicardium region”, respectively.
