Potassium salts may be infused to reverse hypokalemia.
Molecular weight potassium: 39.098 g
|
Salt
|
Molecular Weight
|
Percent Potassium
|
mmol K+ per gram
|
mEq K+ per gram
|
|
potassium acetate
|
98.14
|
40%
|
10.19
|
10.19
|
|
potassium chloride
|
74.55
|
52%
|
13.4
|
13.4
|
|
monobasic potassium phosphate
|
136.1
|
28.7%
|
7.35
|
7.35
|
|
dibasic potassium phosphate, anhydrous
|
174.2
|
44.9%
|
11.48
|
11.48
|
|
dibasic potassium phosphate trihydrate
|
228.2
|
34.3%
|
8.76
|
8.76
|
where:
• Monobasic potassium phosphate = KH2PO4
• Dibasic potassium phosphate = K2HPO4
• The combination of monobasic and dibasic phosphate salts forms a buffering system.
Common parenteral formulations for IV infusion contain 1-3 mEq per mL
