Fluids/Electrolytes

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Anonymous
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63069
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Fluids/Electrolytes
Updated:
2011-01-30 22:49:43
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n300
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fluid and electrolyte questions
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  1. Normal levels of potassium (K+)?
    3.5 - 5.0 mEq/L
  2. Normal levels of sodium (Na+)?
    136 - 145 mEq/L
  3. Normal levels of calcium (Ca+)?
    9.0 - 10.5 mg/dL
  4. Normal levels of chloride (Cl-)?
    98 - 106 mEq/L
  5. Normal levels of magnesium (Mg++)?
    1.3 - 2.1 mEq/L
  6. Normal levels of phosphorus (P)?
    3.0 - 4.5 mg/dL
  7. Normal levels of bicarbonate (HCO3-)?
    21 - 28 mEq/L
  8. What percentage of the average person's body weight is consisted of water?
    60% of weight
  9. Of the 60% of total body weight consisted of water, what is the 20%/40% breakdown?
    • 20% - extracellular
    • 40% - intracellular
  10. 1 L of water represents what body weight?
    1 kg or 2.2 lbs
  11. What is the interstitial space?
    • Fluid outside the vessels land cells
    • Should not contain protein
    • EDEMA buildup is here
  12. What is the intravascular space?
    • The fluid in vessels; in the blood (aka plasma)
    • Protein should be in plasma
  13. A decreased protein level in the intravascular space can result in what?
    Fluid leaks
  14. What is the transcellular space?
    • ECF elsewhere in the body
    • - intraocular fluid
    • - synovial fluid
    • - CSF... etc
  15. What fluid is being tested when we take "labs"? Where do we take it from?
    Extracellular fluid, taken from blood
  16. Main functions of sodium?
    • Maintains fluid balance
    • Action potentials
    • Maintains acid-base balance
    • Maintains electroneutrality
    • *Majority of Na+ is outside the cell, in the blood
  17. Main functions of potassium?
    • Regulates intracellular osmolarity
    • Maintains electrical membrane excitability
    • Maintains plasma acid-base balance
  18. Main function of calcium?
    • Plays a role in coagulation
    • Adds strength and density to bones and teeth
    • Essential to cardiac, skeletal, and smooth muscle contraction
  19. Main functions of chloride?
    • Maintains plasma acid-base balance
    • Maintains plasma electroneutrality
    • Forms hydrochloric acid (stomach)
  20. Main functions of magnesium?
    • Neuromuscular transmission
    • *Test reflexes
    • - increased Mg, decreased reflexes
    • - decreased Mg, increased reflexes
  21. Relationship of phosphorus to calcium?
    Inverse. Levels will be opposite.
  22. When we talk about "fluid movement", where is it moving between?
    Between the interstitial and intravascular fluid
  23. What is hydrostatic pressure?
    • "Water-pushing" pressure
    • Influenced by BP and blood volume
    • Pushes fluid out of capillaries and into interstitial space
  24. Fluid from the capillaries moves into the interstital space... what occurs?
    Edema
  25. What is colloidal osmotic pressure?
    • Pressure from proteins in the plasma
    • Draws fluid from the interstitial fluid back into the capillary
  26. What is osmolality?
    • Concentration
    • # of particles in a fluid determines its osmolality
    • Concentrated - High osmolality
    • Dilute - low osmolality

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