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51. At 3:00 P.M., a pharmacist received an order to add 30 mEq/L of potassium chloride to the already running intravenous fluid for a patient. After checking the medication order, the pharmacist found that the patient is receiving a 5% dextrose/0.9% sodium chloride infusion at a rate of 85 mL/h and that the patients liter of fluid was started at 1:30 PM.7 (a) Assuming that it took 30 minutes to provide the needed potassium chloride to the floor nurse, how many milliequivalents of potassium chloride should have been added to the patients running IV fluid to achieve the ordered concentration? (b) How many milliliters of an injection containing 2 mEq of potassium chloride/mL should have been used to supply the amount of potassium chloride needed? (c) What was the osmolarity of the infusion with the potassium chloride added? Assume complete dissociation of the sodium chloride and potasslum chloride.

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Answer #1

A) 17meq to be added.

B) 330ml as out of 500ml 2hrs of 85ml/hr was being utilised

C)68mmol is required as 4 osmolality added

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Answer #2
a. 24.9 mEq KCl b. 12.45 mL KCl injection c. 645.47 mOsmol/L
source: book
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