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Table 2 Parameters of myocardial coordination and left ventricular systolic function obtained by tissue Doppler echocardiography.

From: Cardiac incoordination induced by left bundle branch block: its relation with left ventricular systolic function in patients with and without cardiomyopathy

Variables Controls N = 20 LBBB N = 21 ICMP N = 19 DCMP N = 26 P
EMDT, ms 14 ± 1 45 ± 4* 42 ± 9* 47 ± 12* < 0.001
EHDT, ms 81 ± 10 136 ± 10* 136 ± 25* 163 ± 33*†‡ < 0.001
IVCT, ms 67 ± 9 91 ± 8* 96 ± 18* 116 ± 31*† < 0.001
IVRT, ms 70 ± 10 134 ± 18* 127 ± 34*† 160 ± 29*†‡ <0.001
ET, ms 321 ± 20 278 ± 41* 207 ± 28*† 220 ± 44*† < 0.001
PSV, cm/s 6.3 ± 1.1 4.1 ± 0.8* 2.6 ± 0.8*† 3.2 ± 1.0*† < 0.001
A-V, mm 9.7 ± 1.5 8.0 ± 1.8* 3.9 ± 1.6*† 5.6 ± 2.8*† <0.001
  1. Abbreviations: A-V = Atrio-ventricular plane displacement; EHDT = Electro-hemodynamic delay time; EMDT = Electro-mechanical delay time; ET = Ejection time; IVCT = Isovolumic contraction time; IVRT = Isovolumic relaxation time; PSV = Peak systolic velocity.
  2. P = Analysis of variance.
  3. * < 0.05 vs. Controls.
  4. †< 0.05 vs. LBBB.
  5. ‡ < 0.05 vs. ICMP.