The best pathophysiologic classification to use for shock is the Weil-Shubin Classification.Adv Exp Med Biol. 1971 Oct;23(0):13-23. Proposed reclassification of shock states with special reference to distributive defects.Weil MH, Shubin H.
The classes are as follows:
Distributive.
Septic
SIRS due to trauma, surgery, infection, pancreatitis, hepatic failure
Anaphylactic
Neurogenic
Adrenal crisis
Cardiogenic
Hemorrhagic
Hypovolemic
Obstructive
Tamponade
Pulmonary embolism