what is the most common electrolyte abnormality in Total parental nutrition?

Answer 1

Too Vague of a question. The daily electrolyte requirements for most patients can be met by adding one to three standard electrolyte packages to the PN. The standard electrolyte package provides the following:
sodium 25 mEq
potassium 40.6 mEq
calcium 5 mEq
magnesium 8 mEq
acetate 33.5 mEq
gluconate 5 mEq
chloride 40.6 mEq

Phosphorus is NOT included in the standard electrolyte package and must be added separately. PN solutions typically contain more phosphate than calcium (as great as 6:1 molar ratio). Cramps may result from excessive phosphate administration. The solubility of calcium in PN solutions is limited by formation of calcium phosphate and carbonate, as well as magnesium salts. Unfortunately, calcium solubility is unpredictable because it depends upon factors such as the commercial sources of the PN components, the order of mixing the PN components, the solution pH, and temperature and storage conditions. In clinical practice, adherence to pharmacy recommendations on the PN order sheets rarely results in precipitation of calcium salts. Furthermore, infusion of large doses of calcium in PN solutions may cause precipitate formation.

Single electrolyte formulations are available in injectable form for individualizing patient prescriptions. Non-standard electrolyte formulations need to be designed with a balance of cations and anions. Acetate is not a "routine" component of a PN prescription as it may result in iatrogenic metabolic alkalosis

Answer 2

I bet it has something to do with sodium and potassium and osmolarity???

Answer 3

http://www.springerlink.com/content/v443502671253l03/

Answer 4

Sodium ?

Answer 5

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Answer 6

potassium