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Renal Artery Stenosis

more about Renal Artery Stenosis


Renal Artery Occlusion




Normal

Abnormal
  • A narrowing of the artery that supplies oxygen-rich blood to the kidneys


  • Atherosclerosis in elderly males with history of smoking, High Blood Pressure, or diabetes
  • Fibromuscular dysplasia (FMD) -- mainly affects the young to middle aged females
  • Neurofibromatosis and congenital (present at birth) are some of the causes seen in children.
  • Post-radiation therapy for other problems.
  • A graft (artificial tubing surgically placed to replace a damaged artery) may become blocked or stenotic.
  • Trauma to the kidneys

  • Recent Hypertension onset (especially in a younger person) with blood pressure that is difficult to control
  • Other signs of Hypertension are evident, such as retinopathy (eye damage seen in the back of the eye using a ophthalmoscope).
  • A doctor may hear a bruit (sound of the blood passing through the narrowed artery) over the kidneys and the abdomen.
  • Blood (morning sample) may be taken to measure rennin levels (a chemical produced by kidneys).
  • Renal Ultrasound or abdominal CAT scan will show the size of the kidneys (affected kidney may be smaller).
  • Renal Nuclear scans will also be helpful.
  • Arteriogram is the golden standard and will show the narrowing.

  • Treat Hypertension
  • Dialysis for kidney failure
  • Surgical correction or balloon dilation (balloon angioplasty is less invasive than surgery) of the narrowed portion of the renal artery.




more about Renal Artery Stenosis


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