Variables Mean ± SD SEM Variance Minimum Maximum
End diastolic diameter (cm) 1.62 ± 0.23 0.022 0.052 1.12 2.35
End systolic diameter (cm) 1.10 ± 0.16 0.016 0.027 0.64 1.7
Fractional shortening (%) 34 ± 3 0.339 0.1 27 42
Biplane Simpson method EF (%) 61.0 ± 3 0.326 0.1 55 73
LV 4ch strain -20.03 ± 1.43 0.141 2.038 -23.8 -13.5
LV 3ch strain -19.4 ± 3.6 0.357 12.977 -22.5 -14.4
LV 2ch strain -19.60 ± 4.1 0.406 16.814 -25.0 -17.4
LV GLS -19.9 ± 1.2 0.115 1.362 -22.9 -13.5
Ejection fraction strain (%) 60.0 ± 2.7 0.265 0.1 52 67
Strain rate -0.050 ± 0.003 0.0003 0.00 -0.074 -0.044