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15 Cards in this Set
- Front
- Back
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where is the largest portion of water in the body?
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intracellular fluid
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What are some indicators used to measure total body water?
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Antipyrine, D2O, HTO
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What are some indicators used for measuring plasma water?
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Evans Blue, I-Albumin
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What are some indicators used for measuring extracellular water?
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Radioactive Na, Cl, sulfate, thiocyanate, and thiosulfate; inulin, mannitol, sucrose
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2.25g of indicator is injected, 0.25g of the indicator is excreted, and the plasma concentration of the indicator is 0.0476g/L. What is the Vdistribution and what is the indicator measuring?
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42L; Total body water (Antipyrine, D2O, HTO)
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What effect would diarrhea have on ECF volume, ICF volume, and osmolality?
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decrease ECF volume, no effect on ICF volume or osmolality
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What effect would SIADH have on ECF volume, ICF volume, and osmolality?
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increase ECF volume and ICF volume, decrease osmolality
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What effect would high Na+ intake have on ECF volume, ICF volume, and osmolality?
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decrease ICF volume, increase ECF volume, increase osmolality
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What effect would adrenal insufficiency have on ECF volume, ICF volume, and osmolality?
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decrease ECF volume, increase ICF volume, decrease osmolality
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What effect would isotonic infusion have on ECF volume, ICF volume, and osmolality?
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increase EFC volume, no effect on ICF volume or osmolality
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What effect would dehydration have on ECF volume, ICF volume, and osmolality?
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decrease ICF and ECF volume, increase osmolality
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What happens to plasma proteins during volume expansion?
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decrease
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What is the signal for Na+ hemostasis?
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volume
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If blood volume increases, what happens to RAAS, SNS, ADH, ANP?
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RAAS down, SNS down, ADH down, ANP up
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What are the responses of the osmoreceptors in the hypothalmus to increased osmolality
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release of ADH, trigger thirst
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