Answer :
Final answer:
The total milliequivalents (mEq) of calcium and phosphorus in the PN is 46.45 mEq.
Explanation:
To calculate the total milliequivalents (mEq) of calcium and phosphorus in the PN, we need to first convert the given amounts of phosphate and calcium into milliequivalents. The PN order specifies that there are 2 milliequivalents (mEq) of phosphate per millimole (mmol). So, the amount of phosphate in milliequivalents is calculated by multiplying the 21 mmol of phosphate by 2:
Phosphate (mEq) = 21 mmol x 2 mEq/mmol = 42 mEq
The order also specifies that there are 4.45 mEq of calcium. Since no conversion is given for calcium, we can assume that the 4.45 mEq value is already in milliequivalents:
Calcium (mEq) = 4.45 mEq
Therefore, the total milliequivalents of calcium and phosphorus in the PN is:
Total = Phosphate (mEq) + Calcium (mEq) = 42 mEq + 4.45 mEq = 46.45 mEq