2

How many ml should be administered?

a Set up the proportion. Label all units.

b. Convert the strength of the medication ordered and the

strength of the medication stocked to the same unit of measurement.

c. Cross-multiply.

d. Solve for X. Round off to the nearest tenth. Label answer.

1. 400 mg/ml

2. a. 400 mg = 0.5 gm

1 ml

X ml

b. 1 gm = 0.5 gm

1000 mg

X mg

X = 500 mg

400 mg = 500 mg

1 ml X ml

c. 400X = 500

d. X = 1.25 = 1.3 ml

Directions for reconstitution state: Add 50 ml of sterile water.

Each ml will contain 12 mg of medication. How many ml will

you give?

1 ml = X ml

12 mg

300 mg

12X = 300

X = 25 ml

c. **Heparin Calculations.**

(1)

Heparin is supplied in various concentrations, labeled in units per ml.

(2)

It is administered subcutaneously or intravenously.

MD0904

2-33

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