Renal artery stenosis
Renal artery stenosis (pronounced: ree-nal ar-ter-ee steh-no-sis) is a medical condition characterized by the narrowing of one or both of the renal arteries, which supply blood to the kidneys.
Etymology
The term "renal artery stenosis" is derived from three words: "renal", which comes from the Latin word renes meaning kidneys; "artery", which comes from the Greek word arteria meaning windpipe, as the arteries were thought to be air-filled in ancient times; and "stenosis", which comes from the Greek word stenosis meaning narrowing.
Definition
Renal artery stenosis is a condition that occurs when the arteries that carry blood to one or both of the kidneys become narrowed. This can lead to hypertension (high blood pressure) and renal insufficiency (kidney failure).
Symptoms
Symptoms of renal artery stenosis may include high blood pressure that is difficult to control with medication, decreased kidney function, or sudden onset of kidney failure.
Causes
Renal artery stenosis can be caused by atherosclerosis, a condition in which plaque builds up in the arteries, or by fibromuscular dysplasia, a condition that causes the walls of the arteries to thicken.
Diagnosis
Diagnosis of renal artery stenosis may involve a physical examination, blood tests, urine tests, imaging tests such as ultrasound, CT scan, or MRI, and possibly a renal angiogram.
Treatment
Treatment for renal artery stenosis may include lifestyle changes, medication to control blood pressure and cholesterol levels, and in some cases, procedures to improve blood flow to the kidneys.
Related Terms
External links
- Medical encyclopedia article on Renal artery stenosis
- Wikipedia's article - Renal artery stenosis
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