Table 5.
Changes in hemodynamic variables after fluid challenge according to the presence of oliguria or AKI
| No-oliguria | Oliguria | No-AKI | AKI | |||||
|---|---|---|---|---|---|---|---|---|
| N = 22 | N = 27 | N = 11 | N = 38 | |||||
| Before FC | After FC | Before FC | After FC | Before FC | After FC | Before FC | After FC | |
| UO (ml/hour) | 53 (37–128) | 103 (47–189) | 15 (2.5–40) | 44 (8–75) | 46 (40–102) | 86 (49–142) | 26 (7–49) | 50 (11–104) |
| RI | 0.75 (0.67–0.81) | 0.73 (0.65–0.78) | 0.74 (0.69–0.80) | 0.73 (0.67–0.79) | 0.71 (0.61–0.77) | 0.68 (0.61–0.74) | 0.76 (0.69–0.81) | 0.74 (0.66–0.79) |
| MAP (mmHg) | 75 (64–82) | 80 (68–94) | 69 (64–82) | 74 (66–91) | 78 (72–94) | 90 (78–100) | 70 (64–81) | 74 (66–90) |
| PP (mmHg) | 50 (44–59) | 57 (47–68) | 47 (38–63) | 52 (47–69) | 48 (38–53) | 57 (46–63) | 48 (42–61) | 56 (47–70) |
All changes were significant with p < 0.01. Of note, interference between subgroups was not significant. Variables are presented as median and interquartile range. AKI acute kidney injury, FC fluid challenge, MAP mean arterial pressure, N number of patients, PP pulse pressure, RI resistivity index, UO urine output