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