x%20Renal%20Osteodystrophy

X Renal Osteodys - Renal Osteodystrophy T he medical term “renal” describes things related to the kidneys Renal osteodystrophy is a bone

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Renal Osteodystrophy T he medical term “renal” describes things related to the kidneys. Renal osteodystrophy is a bone disease that occurs when your kidneys fail to maintain the proper levels of cal- cium and phosphorus in your blood. It’s a common problem in people with kidney disease and affects 90 percent of dialysis patients. Renal osteodystrophy is most serious in children because their bones are still growing. The condition slows growth and causes deformities. One such deformity occurs when the legs bend inward toward each other or outward away from each other; this deformity is referred to as “renal rickets.” Another important consequence is short stature. Symptoms can be seen in growing chil- dren with renal disease even before they start dialysis. The bone changes from renal osteodys- trophy can begin many years before symptoms appear in adults with kidney disease. For this reason, it’s called the “silent crippler.” The symptoms of renal osteodystrophy aren’t usually seen in adults until they have been on dialysis for several years. Older patients and women who have gone through meno- pause are at greater risk for this disease because they’re already vulnerable to osteoporosis, even without kidney disease. If left untreated, the bones gradually become thin and weak, and a person with renal osteodystrophy may begin to feel bone and joint pain. There’s also an increased risk of bone fractures. Hormones and Minerals In healthy adults, bone tissue is continu- ally being remodeled and rebuilt. The kidneys play an important role in main- taining healthy bone mass and structure because one of their jobs is to balance calcium and phosphorus levels in the blood. Calcium is a mineral that builds and strengthens bones. It’s found in many foods, particularly milk and other dairy products. If calcium levels in the blood become too low, four small glands in the neck called the parathyroid glands release a hormone called parathyroid hormone (PTH). This hormone draws calcium from the bones to raise blood calcium levels. Too much PTH in the
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This note was uploaded on 10/04/2009 for the course NTR 371 taught by Professor Southworth during the Spring '09 term at University of Texas at Austin.

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X Renal Osteodys - Renal Osteodystrophy T he medical term “renal” describes things related to the kidneys Renal osteodystrophy is a bone

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