Considering a rule of three, the prescribed rate of infusion is 50 [tex]\frac{mL}{hour}[/tex].
A woman who has preeclampsia is receiving magnesium sulfate 20 grams per 500 mL of lactated Ringers via infusion pump. The prescribed rate of infusion is 2 [tex]\frac{grams}{hour}[/tex].
To know the amount of [tex]\frac{mL}{hour}[/tex] that the nurse must configure the infusion pump, you must first know the volume represented by the 2 grams of prescribed infusion rate.
For this, the following rule of three is carried out: if a woman is receiving magnesium sulfate 20 grams per 500 mL of lactated Ringers, when receiving 2 grams, how many mL of lactated Ringers are there?
[tex]volume=\frac{2 gramsx500 mL}{20 grams}[/tex]
volume= 50 mL
Replacing, the prescribed rate of infusion is [tex]\frac{2grams}{hour} =\frac{50 mL}{hour}[/tex].
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