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9 Cards in this Set
- Front
- Back
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Ca |
- Calcium is a cation absorbed into the bloodstream from dietary sources and functions in bone formation, nerve impulse transmission and contraction of myocardial and skeletal muscles - aids in blood clotting by converting prothrombin to thrombin |
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Calcium values? |
8.6 - 10 mg/dL |
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Calcium RN consideration |
- instruct to eat a normal calcium diet ( 800 mg/day ) for 3 days prior to exam - fasting for 8 hrs prior to test - note that calcium levels can be affected by decreased proteins levels and the use of anticonvulsant medications |
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Mg |
- magnesium is used as an,index to determine metabolic activity and renal function - needed in the blood clotting mechanism, regulates neuromuscular activity, acts as a cofactor that modifies the activity of many enzymes, and has an effect on the metabolism of calcium |
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Magnesium values |
1.6 - 2.6 mg/dL |
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Magnesium RN consideration |
- prolonged use of Mg products causes increased serum levels
- Long-term parenteral medication therapy or excessive loss of body fluids may decrease serum levels |
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Phosphorus |
- important in bone marrow formation, energy storage and release, urinaryacid-base buffering and carbohydrate metabolism - absorbed from food and is excreted by the kidneys - concentration is stored in bone and skeletal muscle |
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Phosphorus values? |
2.7 - 4.5 mg/dL |
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Phosphorus RN consideration |
- fasting prior to test |
