patho_exam1

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Author:
notton
ID:
110881
Filename:
patho_exam1
Updated:
2011-10-21 10:57:49
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patho felver notton midterm1
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Description:
Study for Pathophysiology midterm 1 Fall 2011
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  1. Name 3 ways diabetic ketoacidosis cause hyperkalemia?
    • 1. A decrease of insulin, which normally pumps K+ from ECF into cells.
    • 2. Polyuria due to osmotic effect of glucose in the urine leads to volume depletion & oliguria.
    • 3. Oliguria decreases potassium excretion, which leads to hyperkalemia.
  2. What are mechanisms of chronic alcoholism that cause predisposal to hypomagnesmia?
    • 1. Poor dietary intake of Mg
    • 2. Decreased Mg absorption from GI tract
    • 3. Increased Mg excretion in urine due to (repeated) rising blood alcohol.
  3. Chronic oliguria due to renal failure causes plasma excesses of which electrolytes?
    • - Potassium
    • - Magnesium
    • *NOT calcium - vitamin D activation does not occur effectively, which leads to low plasma calcium.
  4. What are the most common fluid/electrolyte imbalances seen wtih oliguric renal failure?
    • - ECV excess
    • - hyperkalemia
    • - hypermagnesemia
    • - hyperphosphalemia
    • - hypocalcemia

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