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Table 3 Comparison of dyssynchrony measurements in three ventricular slices in patients with and without LBBB, and healthy subjects.

From: Circumferential myocardial strain in cardiomyopathy with and without left bundle branch block

   LBBB Non-LBBB Healthy p(LBBB vs. non LBBB)* p(LBBB vs. healthy)* p(non-LBBB vs. healthy)*
Basal IL-AS (ms)
(range)
391 ± 37 (325-425) 136 ± 79
(0-325)
45 ± 23
(0-75)
< 0.0001* < 0.0001* 0.001*
  AL-IS (ms)
(range)
284 ± 119 (150-425) 106 ± 54
(0-200)
68 ± 64
(0-175)
0.001* 0.0002* 0.171
  A-I (ms)
(range)
122 ± 145 (0-400) 83 ± 85
(0-225)
68 ± 32
(0-100)
0.478 0.272 0.594
Mid IL-AS (ms)
(range)
353 ± 79 (245-425) 82 ± 44
(25-140)
69 ± 39
(0-125)
< 0.0001* < 0.0001* 0.451
  AL-IS (ms)
(range)
283 ± 108 (125-400) 114 ± 37
(25-175)
50 ± 46
(0-125)
0.0002* < 0.0001* 0.002*
  A-I (ms)
(range)
168 ± 164 (0-475) 69 ± 46
(0-175)
64 ± 55
(0-150)
0.097 0.084 0.791
Apical IL-AS (ms)
(range)
278 ± 118 (140-425) 61 ± 47
(0-325)
38 ± 41
(0-75)
< 0.0001* < 0.0001* 0.260
  AL-IS (ms)
(range)
224 ± 118 (150-425) 70 ± 63
(0-200)
54 ± 24
(0-175)
0.002* 0.001* 0.437
  A-I (ms)
(range)
96 ± 110 (0-300) 48 ± 43
(0-150)
34 ± 20
(0-75)
0.200 0.093 0.601
T12SD (ms)   164 ± 30 (131-207) 70 ± 17
(51-103)
65 ± 17
(44-97)
< 0.0001* < 0.0001* 0.467
  1. Data presented as absolute time difference between the two walls ± standard deviation. *with Bonferroni correction for multiple comparisons, p < 0.017 was considered significant. IL-AS = inferolateral wall to anteroseptal wall. AL-IS = anterolateral wall to inferoseptal wall. A-I = Anterior wall to inferior wall.