Table 2.
Variations in hemodynamic parameters at baseline, after PLR and after fluid challenge in responders and nonresponders
| Responders (n = 29) | Nonresponders (n = 30) | p | |
|---|---|---|---|
| SBP, mmHg | |||
| Baseline | 123 ± 28 | 117 ± 23 | 0.06 |
| PLR | 125 ± 26 | 123 ± 23 | 0.77 |
| Volume expansion | 126 ± 20 | 123 ± 25 | 0.61 |
| DBP, mmHg | |||
| Base | 67 ± 17 | 72 ± 43 | 0.60 |
| PLR | 69 ± 15 | 68 ± 21 | 0.79 |
| Volume expansion | 67 ± 13 | 68 ± 21 | 0.82 |
| MBP, mmHg | |||
| Baseline | 86 ± 19 | 87 ± 33 | 0.87 |
| PLR | 88 ± 18 | 86 ± 19 | 0.96 |
| Volume expansion | 87 ± 14 | 87 ± 21 | 0.95 |
| HR, bpm | |||
| Baseline | 98 ± 16 | 96 ± 20 | 0.66 |
| PLR | 95 ± 16* | 94 ± 20 | 0.72 |
| Volume expansion | 95 ± 15* | 92 ± 20 | 0.54 |
| VTI, cm | |||
| Baseline | 16 ± 4 | 19 ± 4 | 0.03 |
| PLR | 18 ± 4* | 18 ± 4 | 0.90 |
| Volume expansion | 20 ± 4*† | 18 ± 4 | 0.04 |
| SV, ml | |||
| Baseline | 48 ± 13 | 53 ± 15 | 0.14 |
| PLR | 54 ± 12* | 52 ± 15 | 0.68 |
| Volume expansion | 59 ± 12*† | 52 ± 15 | 0.04 |
| CO, L/min | |||
| Baseline | 4.6 ± 1.1 | 5.0 ± 1.5 | 0.21 |
| PLR | 5.1 ± 1.3* | 4.8 ± 1.5 | 0.44 |
| Volume expansion | 5.6 ± 1.2*† | 4.7 ± 1.6 | 0.02 |
Values are expressed as the mean ± SD
PLR passive leg-raising, SBP systolic blood pressure, DBP diastolic blood pressure, MBP mean blood pressure, PP pulse pressure, HR heart rate, VTI aortic velocity-time integral SV stroke volume, CO cardiac output
* = p < 0.05 vs. baseline
† = p < 0.05 vs. PLR