Figure 2.

Changes in echocardiography parameters over 6 and 12 months. Mean values along with 95% CIs are presented according to CRT ON or CRT OFF for Ea, Ees_sb, Ea/Ees_sb, and V₀. The numbers below each figure represent the number of participants in each subgroup (CRT OFF or CRT ON). The most pronounced changes were observed in V₀. CRT indicates cardiac resynchronization therapy; CRT OFF, control group; CRT ON, active group; Ea, effective arterial elastance; Ees_sb, single beat–derived end-systolic elastance; V₀, volume intercept.