Electrolytes Flashcards
1
Q
Sodium
A
135-145 mEq/L
Major Cation in EC Fluid
Muscle Contraction
Regulated by aldosterone
2
Q
Potassium
A
3.5-5.3 mEq/L
Most Abundant ICF Cation
Muscle/heart Contraction
3
Q
Calcium
A
8.5-10.5 mg/dL total
1.1-1.3 mmol/L ionized
40% bound to proteins
50% ionized (biologically active)
Calcitonin lower (tones it down)
Parathyroid hormone raises
4
Q
Magnesium
A
1.5-2.5 mEq/L
Enzyme cofactor
Slows everything down
