Figure 13 Changes in LV ejection fraction after CRT in 25 patients studied by Yu et al. A gradual increase in LV ejection fraction was observed (*p<0.05 vs baseline). Interestingly after cessation of CRT at 3 months' follow‐up a gradual decline in LV ejection fraction was seen (†p<0.05 vs 3 months of CRT. (Adapted from reference 4.)