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Table 1 Baseline characteristics of the study groups

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

Parameter N = 59 I group (n = 20) II group (n = 39) Р
Age, (years) 52.9 ± 9.0 52.0±7.6 53.4±9.7 0.624
Men, (n) 88% (52/59) 85% (17/20) 90% (35/39) 0.594
CAD, (%) 54 47 60 0.308
NYHA functional class 2.8±0.6 2.6±0.6 2.8±0.6 0.110
LBBB, (%) 59 50 64 0.297
QRS, (ms) 140.9 ± 38.9 139.1±44.2 141.8±36.7 0.997
Atrial fibrillation, (%) 34 25 38 0.301
LVEDV, (ml) 231.9±65.1 233.4±65.0 231.2±65.9 0.288
LVESV, (ml) 163.5±49.4 163.4±46.5 163.5±51.3 0.475
LVEF, (%) 29.8±3.6 30.0±2.7 29.6±3.9 0.458
  1. Tables. 1 and 2: M ± SD - mean ± standard deviation, CAD – coronary artery disease, NYHA – New York Heart Association, LBBB- left bundle branch block, LVESV – left ventricular end-systolic volume, LVEDV – left ventricular end-diastolic volume, LVEF – left ventricular ejection fraction