Table 3 Published correlations between ultrasound measurements of IVC collapsibility index and CVP or RAP in spontaneously ventilating patients
Type of inspiration | Study | N | Mean CVP or RAP | Correlation coefficient | p-value | Comments |
|---|---|---|---|---|---|---|
Passive | Taniguchi et al., [19] | 90 | 8.0 | −0.57 | <0.05 | Study reports median CVP/RAP |
Zhang et al., [21] | 72 | 3.0 | −0.27 | 0.017 |  | |
Prekker et al., [26] | 65 | 7.0 | −0.40 | <0.05 | Study reports median CVP/RAP | |
Yildirimturk et al., [15] | 22 | 9.7 | −0.49 | <0.05 |  | |
Nagdev et al., [28] | 73 | 10.5 | −0.74 | <0.05 |  | |
Brennan et al., [18] | 91 | 7.0 | −0.50 | a |  | |
Kircher et al., [3] | 83 | a | −0.75 | a |  | |
Moreno et al., [17] | 65 | a | −0.71 | a |  | |
Sniff | Taniguchi et al., [19] | 90 | 8.0 | −0.63 | <0.05 | Study reports median CVP/RAP |
Tsutsui et al., [22] | 71 | 13.0 | −0.41 | <0.0001 |  | |
Patel et al., [16] | 34 | 11.0 | −0.49 | 0.006 |  | |
Brennan et al., [18] | 91 | 7.0 | −0.54 | a |  | |
Nagueh et al., [31] | 23 | 9.0 | −0.76 | <0.001 |  |