3.3.5 Electrolytes (Magnesium) Flashcards
Essential cofactor of >300 enzymes
Magnesium
Magnesium is a Intracellular cation that is 10x higher in RBC
T or F
T
Magnesium is 2nd most abundant Intracellular cation
T or F
T
K = 20x
Mg = 10x
T or F
T
Total plasma Mg
____ ionized/free
____ bound to protein
____ bound to other ions
55%
30%
15%
Normal Ref Value for Mg:
a. 1.26-2.1 mEq/L (1.51-2.52 mg/dL)
b. 1.27-2.2 mEq/L (1.52-2.53 mg/dL)
c. 1.25-2.0 mEq/L (1.50-2.51 mg/dL)
a
Panic value for Mg:
Hypomagnesemia:
Hypermagnesemia:
a. ≤ 1 mg/dL ; ≥4.7 mg/dL
b. ≤ 2 mg/dL ; ≥4.8 mg/dL
c. ≤ 3 mg/dL ; ≥4.9 mg/dL
a
the gold standard for divalent cations
a. AAS
b. Dye-binding
c. Dye-lake method
a
Routine method
a. AAS
b. Dye-binding
c. Dye-lake method
b
What dye is most commonly used in dye binding?
a. Formazan
b. Methylthymol blue
c. Calmagite
d. xylidyl blue
c
Red-violet color (+)
a. Formazan
b. Methylthymol blue
c. Calmagite
d. xylidyl blue
c
Blue (+)
a. Formazan
b. Methylthymol blue
c. Calmagite
d. xylidyl blue
abd
Dye-lake method positive indicator?
a. Yellow
b. Red
b
Dye-lake method positive indicator if Thiazole is used?
a. Yellow
b. Red
a
Dye-lake method positive indicator is Titan is used?
a. Yellow
b. Red
a
