LVEF per patient over time. (A) LVEF (%) per patient at WCD initiation to WCD end. Data is shown for 70 patients who had both a baseline and final EF measurement. (B) LVEF improvement grouped by starting LVEF (n=70). * denotes significance of p<0.001 as compared to respective baseline EF. (C) Outcomes as related to initial and final LVEF. Average baseline and final LVEF (± SD) measurements are shown for all patients having both a baseline and final EF recorded (n=70), patients who improved during WCD use (n=33), patients who received an ICD after WCD use (n=20), and all remaining patients who ended use for other reasons (n=17). All groups, except those receiving ICDs, significantly improved EF during the course of WCD use. Those patients who improved had the highest overall final EF. * denotes significance of p<0.005 as compared to respective baseline EF. ** denotes significance of p<0.005 as compared to other final EF groups.