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Citow - Critical Care > Electrolytes > Flashcards

Flashcards in Electrolytes Deck (9)
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1
Q

How does urine osmolality differ between central and nephrogenic DI?

A

Central: < 200 mOsm/L

Nephro: 200 - 500 mOsm/L

2
Q

Hyperglycemic non-ketotic syndrome can cause what electrolyte abnormality?

A

hypovolemic hypernatremia

3
Q

What are the diagnostic criteria for SIADH?

A

urine osmolarity > serum osmolarity
serium Na < 135
serum osmolarity < 280urine Na > 20 over 24 hours

4
Q

What are the treatments for SIADH?

A
  • fluid restriction
  • demecoccline (induces nephrogenic DI)
  • furosemide w/ 3%
5
Q

What is the treatment for hyperkalemia w/ EKG changes?

A
  • stabilize cardiac membranes w/ calcium gluconate
  • insulin
  • furosemide
6
Q

Where is magnesium absorbed in the nephron?

A

loop of henle

7
Q

What hormone is affected by hypomagnesemia?

A

low parathyroid hormone

8
Q

Blood transfusions can cause what calcium abnormality?

A

hypocalcemia (citrate binding to Ca ions)

9
Q

Hypocalcemia causes what neuromuscular findings?

A

hyperreflexia, tetany, and seizures