Table 2 Statistics on the differences between the various measurements and respiratory states
From: Respiratory influence on left atrial volume calculation with 3D-echocardiography
Mean bias ± SD | Correlation coefficiency | 95 % limits of agreement | Coefficient of variation | ||
|---|---|---|---|---|---|
EDV | Inspiratory vs. expiratory | −1.0 ± 6.0 | −0.043 (p = 0.73) | −12.79-10.71 | 9.3 % |
Inspiratory vs. free breathing | −0.26 ± 7.9 | 0.038 (p = 0.77) | −15.75-15.24 | 12.2 % | |
Expiratory vs. free breathing | 0.78 ± 8.0 | 0.071 (p = 0.58) | −14.83-16.40 | 12.2 % | |
ESV | Inspiratory vs. expiratory | −1.19 ± 5.6 | −0.048 (p = 0.71) | −12.11-9.72 | 19.1 % |
Inspiratory vs. free breathing | −0.70 ± 4.5 | −0.04 (p = 0.72) | −9.57-8.16 | 15.9 % | |
Expiratory vs. free breathing | 0.49 ± 5.0 | 0.011 (p = 0.93) | −9.39-10.37 | 17.4 % | |
SV | Inspiratory vs. expiratory | 0.16 ± 7.2 | 0.011 (p = 0.93) | −13.91-14.23 | 18.2 % |
Inspiratory vs. free breathing | 0.48 ± 7.8 | 0.12 (p = 0.33) | −14.86-15.82 | 20.0 % | |
Expiratory vs. free breathing | 0.31 ± 7.5 | 0.12 (p = 0.36) | −14.38-15.01 | 19.2 % | |
EF | Inspiratory vs. expiratory | 1.77 ± 11.8 | −0.027 (p = 0.83) | −21.41-24.95 | 13.8 % |
Inspiratory vs. free breathing | 1.13 ± 10.0 | 0.013 (p = 0.92) | −18.53-20.78 | 11.6 | |
Expiratory vs. free breathing | −0.64 ± 10.8 | 0.040 (p = 0.75) | −21.80-20.52 | 12.6 % |