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Table 2 Echocardiographic characteristics at baseline

From: The Association of a classical left bundle Branch Block Contraction Pattern by vendor-independent strain echocardiography and outcome after cardiac resynchronization therapy

  All No Classical Classical  
n = 283 n = 87 n = 196 p-value
Days from echo to CRTa 30 (5–78) 22 (5–78) 34 (5–75) 0.89
LVEDV, mL 226 ± 83 214 ± 82 231 ± 83 0.11
LVESV, mL 180 ± 75 164 ± 67 187 ± 78 0.02
LVEF, % 21 ± 7 23 ± 7 20 ± 7 < 0.001
End-systolic GLS, % −7.0 ± 2.9 −7.9 ± 2.6 −6.7 ± 3.0 0.001
Frame rate ≤ 30 frames/s 159 (56%) 48 (55%) 111 (57%) 0.90
< 25 frames per cardiac cycle 88 (31%) 18 (21%) 70 (36%) 0.01
Sinus rhythm on baseline echo 242 (86%) 75 (86%) 167 (85%) 0.99
Heart rate on baseline echo, min−1 77 ± 16 74 ± 14 79 ± 17 0.02
  1. aMedian (25th–75th percentile), Wilcoxon rank-sum test used for testing differences
  2. Echo Echocardiogram, GLS Global longitudinal strain, LVEDV Left ventricular end-diastolic volume, LVEF Left ventricular ejection fraction, LVESV Left ventricular end-systolic volume