1020 Additional late improvement of left ventricular function after percutaneous recanalisation of chronic total coronary occlusions

Results A significant decrease in mean end-diastolic volume index (86 ± 14 ml/m2 to 78 ± 15 ml/m2; p = 0.02) and mean end-systolic volume index (35 ± 13 ml/m2 to 30 ± 13 ml/ m2; p = 0.03) was observed three years after recanalisation. Mean ejection fraction tended to improve (60 ± 9% to 63 ± 11%; p = 0.11). SWT significantly increased at 5 month follow-up (p < 0.001) and an additional improvement was found at 3 years (p = 0.04) follow-up in segments with TEI of < 25%. In segments with TEI between 25% and 75%, SWT remained unchanged at 5-month follow-up (p = 0.89), but improved after 5 months (p = 0.04). SWT remained unchanged in segments with transmural scars (Figure 1). TEI was a better predictor for segmental functional recovery than EDWT (odds ratio 5.6, CI: 1.5–21.1; p = 0.01 versus 2.5, CI: 0.7–8.3; p = 0.14).