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Table 2 Intraoperative data

From: Outcome impact of individualized fluid management during spine surgery: a before-after prospective comparison study

Variable Control
(n = 150)
IFM
(n = 150)
P value
Operation time (min) 193 (156,225) 184 (153,220) 0.404
Infused crystalloids (ml/kg/h) 7.4 (5.1–9.7) 7.2 (4.6–9.8) 0.398
Infused colloids (ml/kg/h) 1.6 (0.3–2.9) 1.6 (0.3–2.9) 0.893
Cell saver use, n(%) 80 (53.3) 94 (62) 0.129
RBC transfusion, n(%) 20 (13.3) 29 (19.3) 0.159
Urine output (ml/kg/h) 2.8 (1.6–4.4) 3.2 (1.1–5.3) 0.121
Estimated blood loss (ml) 470 (53–1357) 529 (140–918) 0.062
Intraoperative fluid balance (ml/kg/h) 5.1 (2.2–8.0) 5.1 (2.2–8.0) 0.904
Vasopressor, n(%) 20 (13.33) 7 (4.67) 0.009
 Phenylephrine, n(%) 2 (1.33) 1 (0.67) 0.391
 Ephedrine, n(%) 19 (12.67) 6 (4.00) 0.07
 Phenylephrine continuous infusion, n(%) 0 (0) 1 (0.67) 0.500
  1. Data are presented as mean ± SD, median (interquartile range), or absolute numbers (percentage). IFM: Individualized fluid management; RBC: Red blood cells