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Table 2 Clinical and functional characteristics at baseline and after 6 months of CRT

From: Echocardiographic markers of dyssynchrony as predictors of super-response to cardiac resynchronisation therapy – a pilot study

Parameter I group (n = 20) II group (n = 39) P
NYHA functional class At baseline 2.6±0.6 2.8±0.6 0.107
After 6 months 1.9±0.7a 2.2±0.9a 0.169
6-min walking distance, (m) At baseline 329.2±86.0 320.9±98.7 0.651
After 6 months 421.5±66.7a 381.5±112.2a 0.169
LVEF by 3D echocardiography, (%) At baseline 30.0±2.7 29.6±3.9 0.458
After 6 months 40.1±5.4a 34.4±3.8a < 0.001
Mean changes 10[6.2;13.2] 5[3;7] < 0.001
LVEDV by 3D echocardiography, (ml) At baseline 233.4±65.0 231.2±65.9 0.820
After 6 months 159.1±39.4a 213.2±63.7a < 0.001
Mean changes −73.0[− 101.0;-51.7] −15.0[− 31.0;-8.0] < 0.001
LVESV by 3D echocardiography, (ml) At baseline 163.4±46.5 163.5±51.3 0.957
After 6 months 95.8±27.1a 140.0±46.7a < 0.001
Mean changes −61.0[−91.0;-47.7] − 20.0[− 38.0;-12.0] < 0.001
QRS, (ms) At baseline 139.1±44.2 141.8±36.7 0.996
After 6 months 153.6±26.2 160.2±26.0a 0.367
  1. a – difference between baseline and postimplant value (р < 0.05)