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Table 3 Correlation of speckle tracking echocardiography (STE) measures in each wall of the left ventricle and 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
Long. strain AS*†‡ –0.64 <0.001 34 0.43 0.011
Long. strain Ant* –0.66 0.003 18 0.59 0.01
Long. strain AL –0.36 0.097 22 0.40 0.07
Long. strain IL*†‡ –0.71 <0.001 24 0.59 0.002
Long. strain Inf*† –0.53 <0.001 43 0.47 0.002
Long. strain IS* –0.43 0.003 46 0.40 0.006
Circ. strain AS*† –0.46 0.001 47 0.46 0.001
Circ. strain Ant –0.40 0.03 30 0.53 0.003
Circ. strain AL –0.39 0.032 31 0.54 0.002
Circ. strain IL –0.12 0.44 46 0.46 0.001
Circ. strain Inf* –0.44 0.003 45 0.51 <0.001
Circ. strain IS*† –0.58 <0.001 44 0.48 0.001
Rad. strain AS*† 0.46 0.001 45 0.46 0.001
Rad. strain Ant 0.44 0.05 20 0.46 0.04
Rad. strain AL 0.52 0.008 25 0.50 0.012
Rad. strain IL* 0.41 0.007 42 0.48 0.001
Rad. strain Inf*†‡ 0.67 <0.001 36 0.56 <0.001
Rad. strain IS*† 0.49 0.002 38 0.56 <0.001
  1. Abbreviations: AS anteroseptal, Ant anterior, AL anterolateral, Circ. circumferential, DASI Duke Activity Status Index, EF ejection fraction, Inf inferior, IL inferolateral, IS inferoseptal, Long. longitudinal, Rad. radial, STE speckle tracking echocardiography.
  2. *Linear association between regional measure of strain and DASI score remained significant after controlling for age and glomerular filtration rate in a multiple linear regression model.
  3. P value <0.05 when comparing regional measure of strain between groups A, B and C.
  4. P value <0.05 when comparing regional measure of strain between group A and B.