Table 3 Metaregression of PPV and SVV ROC curves in the considered subgroups of studies
PPV | Closed Abdomen Closed Chest (N = 20) | Open Abdomen Closed Chest (N = 8) | Closed Abdomen Open Chest (N = 9) | Prone (N = 9) | Laparoscopy (N = 6) |
|---|---|---|---|---|---|
PEEP (cmH2O) | Â | Â | Â | Â | Â |
0 | Ref | Ref | Ref | Ref | Ref |
0–5 | − 0.08 (p = 0.39) | − 0.15 (p = 0.35) | 0.05 (p = 0.69) | − 0.09 (p = 0.38) | − 0.16 (p = 0.31) |
 > 5 | − 0.20 (p = 0.09) | − 0.24 (p = 0.19) | NA | NA | − 0.20 (p = 0.34) |
VT > 8 ml/Kg | 0.20 (p < 0.001) | 0.02 (p = 0.86) | 0.07 (p = 0.55) | 0.22 (p = 0.03) | − 0.14 (p = 0.31) |
TIVA | 0.00 (p = 0.97) | 0.14 (p = 0.26) | NA | 0.06 (p = 0.61) | − 0.07 (p = 0.65) |
COLLOIDS | 0.18 (p < 0.001) | − 0.03 (p = 0.76) | − 0.06 (p = 0.70) | 0.11 (p = 0.31) | 0.03 (p = 0.86) |
Volume > 4 ml/kg | 0.11 (p = 0.05) | 0.13 (p = 0.22) | NA | 0.17 (p = 0.32) | 0.17 (p = 0.14) |
Rate ≥ 15 Min | 0.02 (p = 0.89) | NA | − 0.07 (p = 0.58) | − 0.08 (p = 0.63) | − 0.07 (p = 0.65) |
SVV | Closed abdomen Closed chest (N = 9) | Open abdomen Closed chest (N = 8) | Closed abdomen Open chest (N = 6) | Prone (N = 7) | Laparoscopy (N = 6) |
|---|---|---|---|---|---|
PEEP (cmH2O) | Â | Â | Â | Â | Â |
0 | Ref | Ref | Ref | Ref | Ref |
0–5 | − 0.06 (p = 0.56) | − 0.09 (p = 0.38) | 0.25 (p = 0.29) | − 0.03 (p = 0.78) | 0.02 (p = 0.87) |
 > 5 | − 0.17 (p = 0.18) | − 0.10 (p = 0.51) | NA | NA | − 0.22 (p = 0.22) |
VT > 8 ml/Kg | 0.07 (p = 0.34) | 0.10 (p = 0.34) | 0.22 (p = 0.19) | 0.17 (p = 0.07)) | 0.02 (p = 0.91) |
TIVA | − 0.00 (p = 0.95) | 0.14 (p = 0.24) | − 0.25 (p = 0.29) | 0.14 (p = 0.15) | − 0.23 (p = 0.09) |
COLLOIDS | 0.12 (p = 0.06) | − 0.01 (p = 0.91) | NA | 0.13 (p = 0.21) | − 0.17 (p = 0.07) |
Volume > 4 ml/kg | 0.12 (p = 0.08) | 0.04 (p = 0.65) | NA | 0.11 (p = 0.33) | 0.01 (p = 0.91) |
Rate ≥ 15 Min | 0.02 (p = 0.82) | NA | − 0.22 (p = 0.19) | 0.00 (p = 0.98) | − 0.23 (p = 0.09) |