In hypovolemic shock, there is a reduced intravascular blood volume which causes circulatory dysfunction and inadequate tissue perfusion. This requires early recognition and prompt treatment to improve prognosis.
How does this happen?
- Internal or external fluid loss
- Decreased intravascular fluid volume
- Diminished venous return
- Reduced preload (filling pressure)
- Decreased stroke volume
- Lowered cardiac output
- Reduced mean arterial blood pressure
- Decreased tissue perfusion
- Reduced oxygen and nutrient delivery to cells
- Multiple-organ-dysfunction syndrome.