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Table 4 Patients classified by SI calculated at ED admission and the presence of TBI: laboratory findings at ED admission. Continuous variables are presented as mean ± 95% confidence interval

From: Is the shock index based classification of hypovolemic shock applicable in multiple injured patients with severe traumatic brain injury?—an analysis of the TraumaRegister DGU®

  Class I Class II Class III Class IV
  SI <0.6 SI ≥0.6 to <1 SI ≥1 to <1.4 SI ≥ 1.4
  Non-TBI TBI Non-TBI TBI Non-TBI TBI Non-TBI TBI
Laboratory findings         
Haemoglobin (g/dl; mean ± CI) 13.3 ± 0.1 12.7 ± 0.1 12.8 ± 0.1 12.3 ± 0.1 11.1 ± 0.1 10.8 ± 0.1 9.6 ± 0.2 9.6 ± 0.2
Platelets (tsd/μl; mean ± CI) 222 ± 1 209 ± 2 223 ± 1 208 ± 2 211 ± 4 192 ± 4 190 ± 7 177 ± 5
Quick (%; mean ± CI) 89 ± 0.5 84 ± 0.6 86 ± 0.4 80 ± 0.5 73 ± 1.0 66 ± 1.2 62 ± 1.8 57 ± 2
pTT (seconds; mean ± CI) 28.5 ± 0.2 30.6 ± 0.4 29.2 ± 0.2 32.4 ± 0.4 33.6 ± 0.8 42.7 ± 1.5 44.2 ± 2.1 53.4 ± 2.8
Lactate (mmol/l; mean ± CI) 2.5 ± 0.1 2.5 ± 0.1 2.9 ± 0.1 3.1 ± 0.1 4.3 ± 0.3 4.6 ± 0.4 5.6 ± 0.5 6.4 ± 0.7