TABLE 2.
Test characteristics of ultrasound technique in predicting central venous pressure < 8 mmHg among patients in spontaneous breath
| IVC Collapsibility index | AP-IJV diameter (mm) | IVCD-max (cm) | IJV aspect ratio | |
|---|---|---|---|---|
| Specificity | 88 (69–98) | 60 (41–79) | 63 (35–85) | 74 (52–90) |
| Sensitivity | 44 (20–70) | 88 (68–97) | 76 (55–91) | 64 (44–81) |
| AUROC | 0.62 (0.45–0.77) | 0.79 (0.63–0.91) | 0.66 (0.49–0.80) | 0.68 (0.51–0.82) |
| P-value | 0.19 | 0.0001 | 0.07 | 0.046 |
| Cut-off | > 17 | ≤ 7 | ≤ 2.1 | ≤ 0.63 |
All data are given in percentage as estimate (95% confidence interval). IVCD-max – inferior vena cava maximum anterior-posterior dimension at the end-expiration, AP-IJV diameter – internal jugular vein antero-posterior diameter