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21 Cards in this Set
- Front
- Back
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acid base balance description involves what |
measuring the input and output of: - carbonic - noncarbonic acids - conjugate bases |
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acid base status of body fluids is assessed by what |
measurements of: - total CO2 - plasma pH - PCO2 |
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what is the most important buffering system of the plasma |
bicarbonate\carbonic acid system |
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what accounts for the greatest portion of the nonbicarbonate buffer value of plasma |
proteins (albumin) 95% |
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what accounts for the major part of the nonbicarbonate buffers of erythrocyte fluid |
hemoglobin |
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the remainder of the nonbicarbonate buffers of erythrocyte fluid is made up of what |
2,3 DPG |
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what are the 2 clinical terms used to describe acid base status |
acidemia alkalemia |
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acidosis and alkalosis refer to pathological states that lead to what |
acidemia or alkalemia |
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what is acidemia |
arterial blood pH <7.35 |
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what is alkalemia |
arterial blood pH >7.45 |
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the pH of a solution is defined as what |
negative logarithm of the hydrogen ion activity (pH= -log H+) |
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a decrease of 1 pH unit represents what |
tenfold increase in the H+ activity |
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what is the average pH of blood |
7.4 |
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the pH of plasma may be considered to be a function of what 2 variables |
PCO2 concentration of titratable base |
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PCO2 is regulated by what |
lungs |
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what does PCO2 represent |
acid component of the carbonic acid\bicarbonate buffer system |
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the concentration of titratable base is regulated by what |
kidneys |
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a total CO2 assay includes what |
bicarbonate dissolved CO2 (dCO2) |
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dCO2 fraction is defined to include what 2 things |
undissociated carbonic acid physically dissolved free CO2 |
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at the pH of blood, the amount of dissolved CO2 is how many times greater than the amount of carbonic acid |
700-1000x |
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what is the term used to express the combined concentration of CO2 and carbonic acid |
cdCO2 |
