When Does Passive Hyperemia Occur?

Passive hyperemia happens when blood can't properly drain from an organ and begins to build up in the blood vessels. Causes of passive hyperemia include: Heart failure or ventricular failure. The left and right ventricles are the two main pumping chambers of the heart.

What causes reactive hyperaemia?

Reactive hyperemia occurs following the removal of a tourniquet, unclamping an artery during surgery, or restoring flow to a coronary artery after recanalization (reopening a closed artery using an angioplasty balloon or clot dissolving drug).

Is the hyperemia associated with inflammation active or passive?

For example, acute local active hyperemia may be a sign of inflammation. Acute local passive hyperemia could be due to intestinal or uterus torsion. Chronic local passive hyperemia could indicate that tumors or abscesses are developing in the body.