Calculate (a) the milliequivalents per milliliter, (b) the total milliequivalents, and (c) the osmolarity of a 500-mL parenteral fluid containing 5% w/v of sodium bicarbonate
(a) 5 % w/v of NaHCO3 means 5 grams of NaHCO3 in 100 mL
M.W of NaHCO3 = 84
1 mL of parental fluid contain calculation gives
1 mL ----------- ( 5 /100) = 0.05 g
0.05 g of NaHCO3 present in 1 mL
mEq = 84 ×10−3 g ( milli
means 1/1000 th)
= 0.084 g
0.084 g of NaHCO3 = 1 mEq
now 0.084 g of NaHCO3 = 1 mEq
0.05 g of NaHCO3 = ?
(0.05 g x 1 mEq) / 0.084 g = 0.595 mEq
Answer for (a) the milliequivalents per milliliter = 0.595 mEq/mL
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(b) 500 mL parenteral fluid contains NaHCO3 = 500 mL x 0.05 g = 25 g NaHCO3
0.084 g of NaHCO3 represent = 1
mEq
25 g of NaHCO3 represent = (25 g x 1 mEq) / 0.084 = 297.62 mEq
Answer for (b) the total milliequivalents = 297.62 mEq
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(c) 100 mL contain
5 g NaHCO3
1000 mL contain = 50 g/ L (1L = 1000 mL ) and for
100 mL
Mosmole/L = [(0.595 mEq/ mL) / 50 g ]x 100 mL x 1000 mL= 1190
mosmole/L
Answer for (c) the osmolarity of a 500-mL parenteral fluid containing 5% w/v of sodium bicarbonate = 1190 Mosmole/L
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Final answers are:
(a) 0.595 mEq/mL sodium
bicarbonate
(b) 297.62 mEq sodium bicarbonate
(c) 1190 mOsmol/L
I would recommend to see module 8 for further understanding on how to calculate these fundamental units at https://static-documents.easygenerator.com/bfce45ef-52e9-40e8-9b69-f572f39f2750.pdf
Hope this helped you!
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