60 mg = 5 gr
60 mg = X mg
X = 300 mg
60 mg = 300 mg
60X = 150
X = 2.5 ml
2-18. COMPUTING DOSAGE FOR PARENTERAL MEDICATIONS
a. Parenteral Medication Calculations. The procedure for computing
parenteral medication dosages is the same as for oral liquid medications (prepared
EXAMPLE: The order is to give Demerol (meperidine) 35 mg I.M. q4h p.r.n.
for pain. The medication is supplied in an ampule marked
50 mg per ml. How much of the medication should you give?
50 mg = 35 mg
(2) Convert the strength of the medication ordered and the strength of the
medication stocked to the same unit of measurement.
(not applicable here)
50X = 35
Solve for "X." Label answers.
X = .7 ml