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Table 3 Comparison between averaged peak strain and averaged peak systolic strain

From: The use of strain, strain rate, and displacement by 2D speckle tracking for assessment of systolic left ventricular function in goats: applicability and influence of general anesthesia

Direction of strain Imaging plane Treatment Peak strain, ε (%) [mean ± SD] Peak systolic strain, ε sys (%) [mean ± SD] 95% CI for difference of means p value
Longitudinal LAX Awake −27.44 ± 2.22 −26.17 ± 2.23 −1.56 to −0.98 <0.001
   Anesthetized −28.65 ± 2.21 −27.17 ± 2.49 −1.91 to −1.06 <0.001
Circumferential SAX-AP Awake −23.22 ± 2.17 −22.80 ± 2.45 −0.67 to 0.05 0.087
   Anesthetized −25.58 ± 3.11 −25.10 ± 3.21 −0.71 to −0.26 <0.001
  SAX-PM Awake −22.98 ± 2.87 −22.35 ± 2.97 −0.89 to −0.37 <0.001
   Anesthetized −24.64 ± 2.92 −23.96 ± 3.23 −1.01 to −0.35 <0.001
  SAX-CH Awake −22.12 ± 3.05 −14.19 ± 1.94 −8.78 to −7.09 <0.001
   Anesthetized −25.43 ± 3.03 −24.84 ± 3.24 −0.76 to −0.40 <0.001
Radial SAX-AP Awake 58.58 ± 7.97 55.24 ± 8.94 2.31 to 4.36 <0.001
   Anesthetized 58.41 ± 11.65 55.59 ± 12.65 1.96 to 3.67 <0.001
  SAX-PM Awake 58.44 ± 9.21 55.26 ± 9.59 2.31 to 4.02 <0.001
   Anesthetized 63.92 ± 15.25 61.86 ± 15.67 1.25 to 2.88 <0.001
  SAX-CH Awake 57.71 ± 10.31 53.90 ± 9.62 2.75 to 4.86 <0.001
   Anesthetized 63.36 ± 12.53 59.80 ± 12.88 2.50 to 4.62 <0.001
  1. LAX, long axis view; SAX-AP, short axis view at apical level; SAX-PM, short axis view at papillary muscle level; SAX-CH, short axis view at chordal level.