Fluid, Electrolyte and Acid-Base Homeostasis
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Transcript of Fluid, Electrolyte and Acid-Base Homeostasis
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Fluid, Electrolyte and
Acid-Base Homeostasis
Chapter 27
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Fluid Compartments
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Water Gain and Loss
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Dehydration and Thirst
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Na+ and Cl- Reabsorption
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Body Water Balance
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Water Intoxication
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Electrolytes in Body Fluids
osmolarity -the total concentration of all solute particles in a solution
osmolality - the number of solute particles dissolved in one liter of water and is reflected in the solution’s ability to cause osmosis
Electrolyte concentrations of body fluids are usually expressed in milliequivalents per liter (mEq/L) = number of electrical charges in 1 liter of solution
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Electrolyte and Protein Concentration
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Blood Electrolyte
Imbalances
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Regulation of pH
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Regulation of pH
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Secretion of H+
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Acid-Base Imbalances
• Acidosis---blood pH below 7.35
• Alkalosis---blood pH above 7.45
• Compensation is an attempt to correct the problem– respiratory compensation– renal compensation
• Acidosis causes depression of CNS---coma
• Alkalosis causes excitability of nervous tissue---spasms, convulsions & death
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Abnormalities of Acid-Base Balance