Skip to main content

Table 4 Prediction of volumetric response to CRT with GE derived echocardiographic images

From: Comparison of strain parameters in dyssynchronous heart failure between speckle tracking echocardiography vendor systems

  Univariate analysis (n = 123) Receiver operating characteristics (n = 123)
Parameter B SD p-value C-statistic Cut-off value
GE SL-delay 0.820 12.997 0.950 0.512 0.144
TomTec SL-delay 22.334 13.081 0.091 0.573 −0.101
GE SRSsept 3.146 0.911 <0.001 0.599 1.614
TomTec SRSsept 0.503 1.362 0.713 0.544 0.455
GE SSI 2.296 0.653 <0.001 0.619 2.980
TomTec SSI 1.250 0.818 0.129 0.530 3.715
GE LBBB-type (type 1 or 2 vs. 3) 18.536 4.003 <0.001   
TomTec LBBB-type (type 1 or 2 vs. 3) 8.151 4.464 0.071   
  1. Prediction of volumetric response to CRT, with results of univariate regression analysis (B, SD and p-value) and receiver operating characteristics (C-statistic, R2 and cut-off). Univariate analyses are based on a change in LVESV on a continuous scale, while receiver operating characteristics are based on a cut-off of ≥15% reduction in LVESV
  2. GE General Electric EchoPac, TomTec TomTec 2DCPA, B beta coefficient, SD standard deviation, SL-delay septal-to-lateral wall delay, SRSsept septal systolic rebound stretch, SSI systolic stretch index, LBBB-type septal strain pattern categorization according to Leenders et al