Skip to main content

Advertisement

Table 1 Baseline Characteristics

From: Speckle tracking echocardiography analyses of myocardial contraction efficiency predict response for cardiac resynchronization therapy

Variables Total Cohort (n = 100) p Value
Control Group (n = 30) Non-responder Group (n = 32) Responder Group (n = 38)
Age, yrs 46 ± 1 62 ± 2 62.35 ± 1.67 < 0.0001
Female/Male 12/18(1:1.5) 8/24(1:3) 13/25(1:1.9) 0.01
NYHA functional class / 3.03 ± 0.67 2.85 ± 0.46 0.17
QRS, ms 81 ± 2.52 149 ± 6.37 151 ± 5.26 < 0.0001
Ischemic etiology / 4(12%) 4(10%) 0.64
LVEF, % 69.45 ± 0.73 26.50 ± 1.91 26.45 ± 1.05 < 0.0001
LVEDV, ml 62.50 ± 1.93 282.30 ± 21.56 203.00 ± 11.30*** < 0.0001
LVESV, ml 18.80 ± 0.61 210.40 ± 20.14 150.20 ± 9.29** < 0.0001
TTO-16-SD, % 2.85 ± 0.23 9.65 ± 0.85 14.04 ± 2.01* < 0.0001
TTP-16-SD, % 3.73 ± 0.18 12.45 ± 1.12 16.83 ± 2.90 < 0.0001
  1. LVEF Left Ventricle Eject Fraction, LVEDV Left ventricle end diastolic volume, LVESV Left ventricle end systolic volume, TTO-16-SD 16-segement Standard deviation of time to onset strain, TTP-16-SD 16-segement Standard deviation of time to peak strain
  2. Compared Responder Group to Non-responder Group: *p < 0.05; **p < 0.01; ***p < 0.001