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Table 2 Relationship between individual parameters and response to cardiac resynchronization therapy

From: Strain dyssynchrony index determined by three-dimensional speckle area tracking can predict response to cardiac resynchronization therapy

 

AUC

(95% CI)

Cut-off

Sensitivity

(95% CI)

Specificity

(95% CI)

p value

Area strain dyssynchrony index

0.93

(0.67-0.99)

3.8%

78%

(40%-97%)

100%

(48%-100%)

<0.001

Conventional dyssynchrony measurements

     

   IVMD

0.73

(0.44-0.93)

40 ms

67%

(30%-93%)

60%

(15%-95%)

NS

   Yu Index

0.62

(0.33-0.86)

32 ms

11%

(0.3%-48%)

100%

(48%-100%)

NS

Radial dyssynchrony

determined by speckle

tracking strain

0.82

(0.53-0.97)

130 ms

100%

(66%-100%)

60%

(15%-95%)

<0.005

  1. AUC, area under the receiver operating characteristic curve; CI, confidence interval; IVMD, interventricular mechanical delay.
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Cardiovascular Ultrasound

ISSN: 1476-7120

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