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Table 3 Comparison of longitudinal global strain (εlong) in responders and non-responders at mid-systole (50 % systole), end-systole (100 % systole) and early post-systole (125 % systole)

From: Strain-time curve analysis by speckle tracking echocardiography in cardiac resynchronization therapy: Insight into the pathophysiology of responders vs. non-responders

  Responders Non-responders
% systole 50 % 100 % 125 % 50 % 100 % 125 %
Pre -1.68 ± 0.78 -5.97 ± 2.73 -6.11 ± 3.05 -0.47± 0.46 -2.91 ± 0.96† -3.48 ± 1.58†
Post -2.49 ± 0.9 -9.94 ± 3.11* -9.27 ± 4.08* -0.17 ± 0.58† -3.69 ± 2.47‡ -4.39 ± 3.22†
  1. *: p < 0.05 versus pre; †: p < 0.05 versus Responders; ‡: p < 0.001 versus Responders
  2. εlong, longitudinal global strain