Fluids

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Author:
surprise
ID:
269967
Filename:
Fluids
Updated:
2014-05-11 17:27:44
Tags:
fluids pII
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Description:
Fluids, electrolytes
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  1. What is the normal ECF concentration of sodium?
    135-145 mEq/liter
  2. What Is normal ECF concentration of chloride?
    96-106 mEq/liter
  3. What is normal ECF concentration of potassium?
    3.5 - 5.0 mEq/liter
  4. What is normal ECF concentration of calcium?
    9.2 - 11 mg/dl
  5. What is normal ECF osmolarity?
    280 - 295 mOsm/liter
  6. Which electrolyte functions in:
    ECF osmotic pressure AND
    neuromuscular depolarization?
    SODIUM
  7. Which electrolyte functions in:
    ICF osmotic pressure
    neuromuscular POLARIZER
    raises RMP
    Potassium
  8. Which electrolyte functions in:
    bones, teeth, coagulation, contraction, secretion, & raises threshold?
    Calcium
  9. In ECF fluid, more water (aka less Na+) equals?
    CELL HYDRATION
  10. In ECF fluid, less water (aka more Na+) equals?
    CELL DEHYDRATION
  11. So not enough water (aka ingesting SALT WATER) equals cell dehydrated therefore the hypothalamus responds with?
    thirst & ADH (antidiruetic hormone)

    AND FLUID SHIFTS OUT OF CELLS
  12. So TOO MUCH water (aka fresh water) equals cell over hyrdated, therefore hypothalamus responds with?
    No ADH!

    AKA FLUID SHIFTS INTO CELLS
  13. So if we one eats too much salt, what reflex / hormone occurs?
    too much salt = thirst = ADH  and FLUID SHIFTS OUT OF CELLS
  14. Too much K+ triggers a reflex!  Which one?
    aldosterone reflex!

    too much K+ in plasma?  then aldosterone gets released = K+ secreted = balance

    too little K+ in plasma? then  NO aldosterone which = reduced K+ secreted = balance
  15. Why does H+ ions have it's own scale?
    low concentration

    such smaller concentration levels = conversions can lead to more human errors
  16. Which reflex controls calcium?
    PTH reflex  (parathyroid hormone, targets the bone to release calcium)
  17. too much water (too little Na) effects BP how?

    too much Na+ (too little water) effects?
    can elevate BP, causes out of vessels

    can lower BP
  18. Which organs control H+ (or your pH)?
    Kidneys & Lungs

    *note lungs cannot remove bicarbonate but kidneys can
  19. What is alkalosis?  What causes it?
    When body fluids have excess base (alkali)

    • Cause:
    • Decreased PCO2 (an acid)
    • Increased bicarbonate (a base)
  20. What is acidosis?  What causes it?
    When body fluids have excess acid

    • Cause:
    • Increased PCO2 (an acid)
    • Decreased bicarbonate (a base)
  21. In order to maintain normal pH, what is the ratio of bicarbonate to carbonic acid (aka PCO2)??
    • 20 bicarbonate--- HCO3- 
    •  
    • to

    1 carbonic acid--- 0.03PCO2
  22. How does pH balance, or correct itself?
    if either CO2 or HCO3 rises, the other will be increased to restore balance

    OR

    if either CO2 or HCO3 drops, the other will be lowered to restore balance

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