Table 2. Comparison of haemodynamic parameters according to response of VO2.
Hemodynamic variables | VO2 responders (n = 43) |
VO2 non responders (n = 49) |
p value |
---|---|---|---|
Respiratory minute ventilation (l min-1) | 8.2 (1.3) | 8 (1) | 0.290 |
Body temperature (°C) | 36.3 (1.7) | 36.6 (0.4) | 0.273 |
Capillary refill time (sec) | |||
Pre-FC | 3.6 (1.5) | 3.6 (1.3) | 0.908 |
Post-FC | 3.2 (1.2) a | 2.9 (1.4) a | 0.289 |
Haemoglobin (g dl-1) | |||
Pre-FC | 11.4 (1.6) | 11.2 (1.4) | 0.518 |
Post-FC | 11.2 (1.7) a | 10.8 (1.4) a | 0.210 |
HR (bpm) | |||
Pre-FC | 82 (22) | 85 (19) | 0.574 |
Post-FC | 78 (21) a | 81 (16) a | 0.404 |
MAP (mmHg) | |||
Pre-FC | 74 (14) | 70 (12) | 0.140 |
Post-FC | 84 (16) a | 82 (12) a | 0.472 |
SV (ml) | |||
Pre-FC | 44 (15) | 42 (15) | 0.652 |
Post-FC | 60 (18) a | 55 (21) a | 0.263 |
CI (ml min-1 m-2) | |||
Pre-FC | 1.7 (0.6) | 1.8 (0.7) | 0.524 |
Post-FC | 2.3 (0.7) a | 2.2 (0.9) a | 0.921 |
DO2 (ml min-1 m-2) | |||
Pre-FC | 269 (103) | 274 (95) | 0.811 |
Post-FC | 339 (124) a | 319 (119) a | 0.428 |
VO2 (ml min-1 m-2) | |||
Pre-FC | 75 (34) | 100 (39) | 0.002 |
Post-FC | 115 (37) a | 93 (31) | 0.007 |
Values are expressed as the mean (SD) or the median [interquartile range]. CI, indexed cardiac output; DO2, oxygen delivery; FC, fluid challenge; HR, heart rate; MAP, mean arterial pressure; SV, stroke volume; VO2, oxygen consumption
a: p<0.05 within groups (pre-/post-FC).