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Table 1
Classification of shock
	Type of shock

Parameter(s)	Hypovolemic	Cardiogenic	Obstructive	Distributive

Preload, filling pressures, end-diastolic volumes	↓	↑	↕	↓
Pump, cardiac output	↓	↓	↓	↑
Afterload, systemic vascular resistance	↑	↑	↑	↓
Systemic oxygen delivery	↓	↓	↓	↑
Systemic oxygen consumption	↑	↓	↕	↕
Systemic oxygen extraction ratio	↑	↑	↑	↓
Global oxygen balance, SvO₂or ScvO₂	↓	↓	↓	↑

SvO₂, mixed venous oxygen saturation; ScvO₂, central venous oxygen saturation.
Rady Critical Care 2005 9:170 doi:10.1186/cc2986

Table 1