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Table 1 Classification of hypovolemic shock based on the shock index [6]

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
Shock no shock mild shock moderate shock severe shock
SI at admission <0.6 ≥0.6 to <1 ≥1 to <1.4 ≥1.4
Need of blood products Observe Consider use of blood products Prepare transfusion Prepare massive transfusion