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Table 3 GLS measurements at rest and during PDS for identification of significant CAD on CAG

From: Diagnostic accuracy of left ventricular longitudinal function by speckle tracking echocardiography to predict significant coronary artery stenosis. A systematic review

Study

Strain masurements

Derivation group, n = 62

p-value

Validation Group n = 40

p-value

CAD- n = 14

CAD+ n = 48

 

CAD- n = 15

CAD+ n = 25

 

Ng [28]

       
 

GLS at rest

−19.1 ± 2.9

−16.3 ± 2.4

0.001

−19.0 ± 2.8

−17.5 ± 2.4

n.s.

 

GLS at PDS

−21.7 ± 3.0

−15.7 ± 2.9

<0.001

−20.7 ± 0.8

−17.7 ± 2.7

<0.05

 

ROC analysis

 

Optimal cut-

 

Sensitivity

Specicity

Accuracy

  

AUC

off for GLS

 

(%)

(%)

(%)

 

Peak stress

0.93, p < 0,001

−20 %

 

84

88

85

  1. mean ± SD
  2. n.s not significant, PDS Peak dobutamine stress, otherwise as in Table 1
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BMC Medical Imaging

ISSN: 1471-2342

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