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. 2020 May 22;36(10):1821–1829. doi: 10.1007/s10554-020-01889-3

Table 3.

Correlation analyses

Measures Correlation with CVP
R2 (95% CI)
IVC 2DE maximal deflection (mm) 0.58 (0.38, 0.73)
IVC 2DE minimal deflection (mm) 0.57 (0.37, 0.72)
IVC volume (mm2) 0.64 (0.46, 0.77)
IVC 3DE maximal deflection vertical axis (mm) 0.32 (0.03, 0.55)
IVC 3DE maximal deflection perpendicular axis (mm) 0.51 (0.26, 0.67)
IVC 3DE minimal deflection vertical axis (mm) 0.32 (0.04, 0.56)
IVC 3DE minimal deflection perpendicular axis (mm) 0.50 (0.26, 0.69)
IVC 3DE area maximal deflection (cm2) 0.49 (0.24, 0.68)
IVC 3DE area minimal deflection (cm2) 0.46 (0.19, 0.67)

2DE two-dimensional echocardiography, 3DE three-dimensional echocardiography, CI confidence interval, IVC inferior vena cava, IVC volume, defined as the product of largest deflection and shortest distention