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Table 2 Correlation of speckle tracking echocardiography (STE) measures of global left ventricular function with DASI score of functional status

From: Speckle tracking echocardiography-determined measures of global and regional left ventricular function correlate with functional capacity in patients with and without preserved ejection fraction

STE variable Correlation of STE variable with DASI P value N Correlation of EF with DASI in same subjects P value
Global Circ. Strain –0.48 0.002 39 0.51 0.001
Global Rad. Strain 0.68 <0.001 32 0.58 0.001
Global Long. Strain –0.57 0.002 26 0.51 0.008
LV Twist 0.33 0.07 31 0.66 <0.001
  1. Abbreviations: Circ. circumferential; DASI Duke Activity Status Index, EF ejection fraction, Long. longitudinal, LV left ventricular, Rad. radial, STE speckle tracking echocardiography.