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Table 2 Index of contractile asymmetry in standard apical views and six left ventricular sectors at baseline

From: Index of contractile asymmetry improves patient selection for CRT: a proof-of-concept study

  All subjects (n = 89) Responders (n = 66) Non-responders (n = 23) p-value † Controls (n = 10) p-value ‡
Two-chamber view, s− 1 0.52 ± 0.14 0.53 ± 0.15 0.48 ± 0.14 0.14 0.45 ± 0.13 0.6
Three-chamber view, s−1 0.71 ± 0.25 0.78 ± 0.23 0.51 ± 0.15 < 0.0001* 0.49 ± 0.12 0.66
Four-chamber view, s−1 0.75 ± 0.25 0.79 ± 0.25 0.62 ± 0.18 < 0.001* 0.42 ± 0.11 < 0.001*
ICA1, s−1 0.58 ± 0.18 0.61 ± 0.19 0.52 ± 0.16 0.03* 0.44 ± 0.12 0.12
ICA2, s−1 0.7 ± 0.23 0.74 ± 0.24 0.59 ± 0.18 0.002* 0.41 ± 0.11 0.002*
ICA3, s−1 0.76 ± 0.25 0.81 ± 0.24 0.6 ± 0.19 < 0.0001* 0.41 ± 0.08 < 0.001*
ICA4, s−1 0.75 ± 0.26 0.83 ± 0.24 0.55 ± 0.18 < 0.0001* 0.46 ± 0.09 0.08
ICA5, s−1 0.56 ± 0.18 0.61 ± 0.18 0.41 ± 0.1 < 0.0001* 0.43 ± 0.13 0.76
ICA6, s−1 0.42 ± 0.1 0.44 ± 0.11 0.39 ± 0.1 0.07 0.4 ± 0.13 0.89
  1. ICA Index of contractile asymmetry; *, p < 0.05; †, responders vs. non-responders; ‡, non-responders vs. controls