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9 Cards in this Set
- Front
- Back
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Serum creatinine: what does it measure
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this test measures the amount of creatinine in the blood.
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What is creatinine
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a catabolic product of creatine phosphate, which is used in skeletal muscle contraction
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what does the daily production of creatinine depend on
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muscle mass, which flucuates very little.
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how is creatinine excreted?
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entirely by the kidneys and is therefore directly proportional to renal excretory function
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what causes a rise in creatinine
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beside dehydration, only such renal disorders as glomerulonephritis, pylenephritis, acute tubular necrosis, and urinary obstruction will cause abnormal elevations in creatinine.
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What is the difference between BUN and Creatinine
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Unlike BUN, the creatinine level is affected very little by hepatic function.
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Which rises first....BUN or creatinine
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BUN rises first then creatinine rises.
Therefore, elevations in creatinine suggest chronicity of the disease process. |
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What are renal function studies
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The creatinine level is interpreted in conjuction with the BUN test.
these tests are referred to as renal function studies. The BUN/Creatinine ration is a good measurement of kidney and liver function |
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What can cause decreased levels (creatinine)
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debilitation
Decreased muscle mass (e.g. muscular dystrophy, myasthenia gravis) |
