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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.