Table 2.
Collapsibility index of the inferior vena cava (cIVC) in non-responders and responders before volume expansion
| Breathing | Measurement | Non-responders | Responders |
|---|---|---|---|
| Condition | Site | (n = 40) | (n = 41) |
| cIVC-ns (%) | 0 | 19 (8; 28) | 35 (20; 44) |
| 1 | 22(10; 34) | 41 (24; 53) | |
| 3 | 11 (3; 18) | 36 (20; 67) | |
| 4 | 12 (5; 24) | 45 (25; 58) | |
| 5* | 7 (2; 18) | 29 (17; 56) | |
| cIVC-st (%) | 0 | 32 (15; 47) | 41 (28; 51) |
| 1 | 34 (19; 52) | 54 (42; 65) | |
| 3 | 26 (11; 42) | 61 (49; 82) | |
| 4 | 13 (8; 31) | 61 (52; 79) | |
| 5* | 14 (3; 32) | 55 (32; 72) |
Values are expressed as counts (%) or medians and interquartile ranges (25th; 75th centiles) Measurements of inferior vena cava (IVC) diameters were carried out at five sites: at the IVC-atrium junction (site 0), then at 1 (site 1), 3 (site 3), 4 (site 4) and 5 cm (site 5) caudal to the IVC-atrium junction. cIVC-ns collapsibility index of the IVC in non-standardized breathing conditions, cIVC-st collapsibility index of IVC with standardized breathing manoeuvre. *Measurement site 5 was performed in only 37 non-responders and 39 responders