Homeostasis

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Author:
HuskerDevil
ID:
87070
Filename:
Homeostasis
Updated:
2011-05-21 20:48:44
Tags:
DPAP2012 Homeostasis
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Description:
Homeostasis cards made by previous students
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  1. Normal potassium levels
    3.4-5.5
  2. Normal potassium intake __ mEq/day
    100
  3. How much potassium is in a medium banana __ mEq
    8
  4. How much potassium is in the extracellular compartment __ mEq
    65
  5. How much potassium is in the intracellular space __ mEq
    3000-4000
  6. Serum potassium of about 7-9 will lead to
    Peaked t waves
  7. Serum potassium of >= 10 will lead to
    Ventricular fibrillation
  8. If the extracellular concentration of K+ increases from 4 mEq/L to 6.5 mEq/L, the membrane potential is reduced by roughly ___
    Half
  9. ___ doesn't change the level of K+ in the body but it does modify myocardial excitability
    Calcium chloride
  10. ___ in the situation of hyperkalemia has an onset of 1-3 minutes and duration of 30-60 minutes
    Calcium chloride
  11. ___ in the situation of hyperkalemia, has an onset of 5-10 minutes and a duration of 2 hours
    Glucose and insulin
  12. ___ increases intracellular uptake of potassium
    Glucose and insulin
  13. ___ in the situation of hyperkalemia, has an onset of 30-40 minutes and a duration of 2-6 hours
    Albuterol, 1-2 neb treatments
  14. ___ increases intracellular uptake of potassium
    Albuterol, 1-2 neb treatments
  15. Exchanges potassium for sodium
    Sodium polystyrene sulfonate (Kayexalate)
  16. ___ in the situation of hyperkalemia, has an onset of 30-40 minutes and a duration of 6 hours
    Sodium polystyrene sulfonate (Kayexalate)
  17. Actually removes potassium
    Sodium polystyrene sulfonate (Kayexalate)
  18. Ultimate treatment for hyperkalemia
    Hemodialysis
  19. Major renal cause of hypokalemia
    Diuretics
  20. Major GI cause of hypokalemia
    Vomiting, diarrhea, tube drainage, laxative abuse
  21. EKG changes with hypokalemia
    Subtle ST depression and U waves
  22. Which is more dangerous in terms of cardiac arrhythmias: Hypokalemia or hyperkalemia?
    Hyperkalemia
  23. One of the most common causes of hypercalcemia
    Malignancy
  24. In the setting of hypercalcemia in the primary care office the two most important things to do are
    Get a PTH level, and do a targeted malignancy screening
  25. Causes for hyperphosphatemia
    Ingestion, rhabdomyolysis, tumor-lysis syndrome, renal failure, hypoparathyroidism, acromegaly
  26. Treatment for hyperphosphatemia
    Bisphosphonates (alendronate, pamidronate), hemodialysis
  27. Hypophosphatemia=total PO4 <__ mg/dL
    2.3

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