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 |