Definition of Atheroembolic renal disease:

Atheroembolic renal disease (AERD) is an inflammatory reaction in the small blood vessels of the kidneys.

Causes, incidence, and risk factors:

AERD is linked to atherosclerosis. Atherosclerosis is a common disorder of the arteries. It occurs when fat, cholesterol, and other substances build up in the walls of arteries and form hard substances called plaque.

In AERD, cholesterol crystals from plaque break off and move to the kidneys and into the blood stream. Once in circulation, the crystals get stuck in tiny blood vessels called arterioles. There, they cause an intense inflammatory response. The result is organ damage due to decreased blood supply. Acute kidney failure is possible if the reaction is severe.

Atherosclerosis of the aorta is the most common cause of AERD. The cholesterol crystals may also break off during cardiac catheterization or aortic surgery.

In some cases, AERD may occur without a cause.

The risk factors for AERD are the same as risk factors for atherosclerosis.