Directions: Calculate the IV medication and infusion rates. Use a calculator for safe dose range calculations, multiplication, and long division as desired. Verify results using DE-style equations where requested
If the order is unsafe, do not proceed with the math. Label answers. Ordered: magnesium sulfate 2.5 g per hr IV infusion, for a patient with toxemia Existing infusion rate when nurse arrives on shift: 75 mL per hr Available: magnesium sulfate (refer to label) diluted in 500 mL D5W a. Number of milliequivalents per milliliter stated on label:
b. Number of milligrams per milliliter stated in fine print on right side of label:
c. Total number of grams of magnesium sulfate in 50-mL vial:Number of grams per hour infusing on the infusion pump:
d. DA equation:
e. Evaluation:Ordered infusion rate:
f. DA equation:
g. Evaluation:
h. Decision:
a. 4 mEq mL
b. 500 mg per mL
c. 25 g
d.
e. Equation is balanced. Only g per hour remains.
f.
g. Equation is balanced. Existing flow rate is too rapid.
h. Flow rate needs to be reduced to 50 mL per hr. Contact prescriber promptly for rate of ad-justment. Assess and monitor patient. Document.
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