Renal Hypertension

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Renal hypertension (or renovascular hypertension) is high blood pressure caused by the narrowing of your arteries that carry blood to your kidneys. It is also sometimes called renal artery stenosis. Because your kidneys are not getting enough blood, they react by making a hormone that makes your blood pressure rise.

When the kidneys receive low blood flow, they act as if the low flow is due to dehydration. So they respond by releasing hormones that stimulate the body to retain sodium and water. Blood vessels fill with additional fluid, and blood pressure goes up.The narrowing in one or both renal arteries is most often caused by the hardening of the arteries. This is the same process that leads to many heart attacks and heart strokes. A less common cause of the narrowing is fibromuscular dysplasia. This is a condition in which the structure of the renal arteries develops abnormally for unclear reasons.

Symptoms of Renal Hypertension

Renal hypertension usually causes no symptoms. The narrowing in the arteries can’t be felt. Unless it’s dangerously high, high blood pressure causes, no symptoms, either. Symptoms of severely elevated blood pressure include:

  • Headache
  • Confusion
  • Blurry
  • Bloody (pink-colored) urine
  • Nose Bleed
  • Chest pain

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