| N | CSA (cm2) | Kolmogorov-Smirnova | P-value |
---|
Supine | 82 | 1.39 ± 0.63 | 0.191 | 0.017 |
30°PLR | 82 | 1.65 ± 0.73 | 0.058 |  |
50°PLR | 82 | 1.68 ± 0.71 | 0.200 |  |
- IJV Internal jugular vein, PLR passive leg raising, CSA cross-sectional area, Kolmogorov-Smirnova test was used for normality checking; one-way ANOVA was used to test the difference
- CSA Supine = 0.760–0.0040*BMI + 0.0455*Fasting time + 0.000253*Preoperative rehydration + 0.00294*Degree - 0.207*G (When Gender is Female, G = 1;When Gender is male, G = 0)
- CSA 30°PLR = 0.715 + 0.0038*BMI + 0.0541*Fasting time + 0.000086*Preoperative rehydration + 0.00635*Degree - 0.289*G (When Gender is Female, G = 1;When Gender is male, G = 0)
- CSA 50°PLR = 0.628 + 0.0068 BMI + 0.0528 Fasting time + 0.000146 Preoperative rehydration + 0.00569 Degree - 0.174*G (When Gender is Female, G = 1;When Gender is male, G = 0)