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Calculate the accuracy of the labeled concentrations in the cardioplegic solution.

The solution contains the following per 100 mL:
- Calcium chloride dihydrate USP: 17.6 mg
- Magnesium chloride hexahydrate USP: 325.3 mg
- Potassium chloride USP: 119.3 mg
- Sodium chloride USP: 643 mg
- In water for injection USP

Electrolyte content per liter (excluding ions for pH adjustment):
- Sodium (Na⁺): 110 mEq
- Magnesium (Mg²⁺): 32 mEq
- Potassium (K⁺): 16 mEq
- Calcium (Ca²⁺): 2.4 mEq
- Chloride (Cl⁻): 160 mEq

Osmolar concentration: 304 mOsmol/liter (calculated)

Determine if these concentrations are accurate.

Answer :

Final answer:

Sodium (Na+): 2,529 mg/L, Magnesium (Mg²⁺): 722 mg/L, Potassium (K+): 254 mg/L, Calcium (Ca²⁺): 2,400 mg/L, Chloride (Cl⁻): 25,600 mg/L.

Explanation:

The labeled concentrations can be calculated by converting the milliequivalents per liter (mEq/L) provided in the information to milligrams per liter (mg/L). This can be done by multiplying the milliequivalent value by the molecular weight of the ion.

For example, the labeled concentration of sodium (Na+) can be calculated by multiplying 110 mEq/L by the molecular weight of sodium (22.99 g/mol), which gives a value of 2,529 mg/L. Similarly, the labeled concentrations of magnesium (Mg²⁺), potassium (K+), calcium (Ca²⁺), and chloride (Cl⁻) can be calculated using their respective milliequivalent values and molecular weights.

Using the information provided, the calculated labeled concentrations are:

  • Sodium (Na+): 2,529 mg/L
  • Magnesium (Mg²⁺): 722 mg/L
  • Potassium (K+): 254 mg/L
  • Calcium (Ca²⁺): 2,400 mg/L
  • Chloride (Cl⁻): 25,600 mg/L

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