questions are - HOW IS POTASSIUM (K) IS CALCULATED TO GET 80 mEq and How is Magnesium (Mg) is calculated?

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Orders:

Kphos 30 mmol in 100 mL NS over 4 hours via central line

KCl 40 mEq in 100 mL NS over 2 hours via central line

Mg gluconate in 9 g in 500 mL NS over 9 hours via central line

 

Solutions:

K - 80mEq

Phos - (0.32 x 86kg) = 27.52 or 30 mmol

Mg - (0.1 x 86kg) = 8.6g or 9g

Calcium corrected Ca - or ionized level = 8.1 + [{4-2.6} x 0.8] = 9.22

 

My questions are - HOW IS POTASSIUM (K) IS CALCULATED TO GET 80 mEq and How is Magnesium (Mg) is calculated?

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For Mg calculation, where did the 0.1 value come from?

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