A patient is ordered to receive sodium supplementation by intravenous infusion of a sodium carbonate solution...
A patient is ordered to receive sodium supplementation by intravenous infusion of a sodium carbonate solution [Na2CO3 , MW=105.989 g/mol]. The patient is ordered to receive 0.8 mEq of Na + ions per hour.
A 750 mL intravenous bag is prepared that contains 27 mL of a 4.2% solution of sodium carbonate. What should be the infusion rate (in units of mL/min) necessary to produce the ordered dose of 0.8 mEq/hr of sodium?
(Note: Consider the total solution volume to be 750 mL. Also assume the sodium carbonate salt completely disassociates in solution. Please do not assume the specifics of this question are exactly clinically relevant due to the variability in this question.)
Homework Answers
Ordered dose of sodium carbonate is 0.8mEq per hour
Available IV bag of 750ml has 4.2 mEq of sodium carbonate
Calculate the flow rate
Using unitary method :
4.2 mEq of sodium carbonate is present in 750ml
Then 1mEq of sodium carbonate is present in 750/4.2 ml
For , 0.8mEq of sodium carbonate we need to take 750/4.2× 0.8
= 142.8 ~ 143ml
Flow rate = total volume/total time
= 143ml/hour
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