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Table 2 Comparison of circumferential myocardial strain percent shortening of all 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 (%S) Non-LBBB (%S) Healthy (%S) p(LBBB vs. non LBBB)* p(LBBB vs. healthy)* p(non-LBBB vs. healthy)*
Basal AS 3 ± 2 6 ± 3 13 ± 4 0.005* < 0.0001* 0.0009*
  A 9 ± 4 8 ± 4 11 ± 5 0.624 0.285 0.115
  AL 17 ± 3 15 ± 2 14 ± 3 0.121 0.066 0.502
  IL 16 ± 6 11 ± 4 11 ± 3 0.046 0.027 0.683
  I 9 ± 6 7 ± 3 8 ± 2 0.371 0.806 0.296
  IS 4 ± 2 6 ± 4 8 ± 3 0.177 0.003* 0.191
Mid AS 3 ± 2 9 ± 4 18 ± 2 0.001* < 0.0001* < 0.0001*
  A 6 ± 4 10 ± 2 20 ± 3 0.009* < 0.0001* < 0.0001*
  AL 17 ± 4 14 ± 2 20 ± 3 0.071 0.047 = 0.0004*
  IL 16 ± 4 12 ± 4 24 ± 3 0.026 < 0.0001* < 0.0001*
  I 7 ± 3 7 ± 5 16 ± 4 0.823 < 0.0001* 0.0003*
  IS 4 ± 3 7 ± 4 17 ± 3 0.036 < 0.0001* < 0.0001*
Apical AS 5 ± 4 9 ± 4 18 ± 3 0.012* < 0.0001* < 0.0001*
  A 6 ± 5 12 ± 5 18 ± 4 0.007* < 0.0001* 0.004*
  AL 14 ± 4 14 ± 3 23 ± 5 0.891 0.0003* 0.0003*
  IL 16 ± 4 13 ± 4 22 ± 7 0.096 0.022 0.002*
  I 6 ± 3 7 ± 5 17 ± 3 0.565 < 0.0001* < 0.0001*
  IS 5 ± 4 8 ± 5 16 ± 2 0.095 < 0.0001* 0.0001*
  1. ± standard deviation. *with Bonferroni correction for multiple comparisons, p < 0.017 was considered significant. AS = anteroseptum. A = anterior wall. AL = anterolateral wall. IL = inferolateral wall. I = inferior wall. IS = inferoseptum.