Study/year | Patients | Setting | Sample size | Position during study | Primary /study predictor of PPV change | Secondary predictor of PPV change | PPV acquirement | Reference preload change | Reference standard | Reference standard acquirement | Tidal volume (ml/kg) | Mean lung compliance (ml/cm H2O) | Mean PEEP (cmH2O) | SB activity |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Myatra2017 [14] | Acute circulatory failure patients | ICU | 30 | Supine | △PPV | △PPV% | PiCCO | VE 6 ml/kg PBW | CI ≥ 15% | TPTD | 6 | 28.0 ± 7.0 | 8.4 ± 2.9 | Avoid |
Yonis 2017 [15] | ARDS patients | ICU | 19 | Prone | △PPV% | N | PiCCO | VE 500 ml crystalloids | CI ≥ 15% | TPTD | 6 | 30 (23, 39) | 8 (5, 10) | Avoid |
Jun2019 [16] | Patients undergoing robot-assisted laparoscopic surgery | OR | 38 | Trendelenburg | △PPV | △PPV% | CARESCAPE monitor | VE6ml/kg colloid | SVI ≥ 15% | ODM | 6 | 16.8 | 5 | Avoid |
Messina2019 [17] | Patients undergoing neurosurgery | OR | 40 | Supine | △PPV% | N | MostCare | VE 250 ml crystalloids | SVI ≥ 10% | MostCare | 6 | 65 (58, 73) | 5 (5, 5.5) | Avoid |
Messina2020 [18] | Prone Neurosurgical Patients | OR | 40 | Prone | △PPV% | N | MostCare | VE 250 ml crystalloids | SVI ≥ 10% | MostCare | 6 | 65 | 5 | Avoid |
Elsayed2021 [19] | Hemodynamic instability patients | ICU | 46 | Semi-recumbent | △PPV | N | Mindray monitor | VE 4 ml/kg | CI ≥ 15% | ODM | 6 | 28.0 ± 6.0 | unclear | Avoid |
Taccheri2021 [20] | Mechanical ventilated patients | ICU | 30 | Semi-recumbent | △PPV | △PPV% | PiCCO | PLR | CI ≥ 10% | TPTD | 6 | 31.5 ± 12.3 | 10.5 ± 3.3 | Avoid |
Hamzaoui2021 [21] | critically ill adult patients | ICU | 54 | semi-recumbent | △PPV | N | Hemodynamic monitors | PLR | VTI ≥ 12% | TTE | 6.0 (5.9, 6.3) | 41 (36, 46) | 10 (9, 11) | Yes |
Shi2022 [22] | ARDS patients | ICU | 84 | Prone | △PPV | N | PiCCO | Both Trendelenburg EEO8 | CI ≥ 8% CI ≥ 5% | TPTD | 6 | 32 (22, 41) | 14 (11, 16) | Avoid |
Xu2022 [23] | Septic shock patients | ICU | 76 | Supine | △PPV | N | PiCCO | VE 250 ml crystalloids | CI ≥ 15% | TPTD | 6 | 25.7 ± 3.8 | 9.5 ± 2.8 | Avoid |