the same. For a review of this conversion factor, refer to paragraph 1-40b in lesson 1,
section VI of this subcourse.
(2) Find the number of milliliters of Demerol injection (50 mg/ml) needed
as a daily dose:
50 mg = 90 mg
1 ml
Xml
50 X = 90
X
= 90
50
X = 1.8 ml every 24 hours.
(3)
Find the number of milliliters to be administered every six hours:
1.8 ml
= X ml
24 hours 6 hours
24 X = 10.8
X
=
108 24
X = 0.45 ml of Demerol injection to administered every six hours
3-4. PROBLEMS USING LABEL STRENGTH
In calculating problems involving the label strength, the label strength should be
the first ratio of the proportion.
Example Problems:
a. If U-100 Insulin contains 100 units of insulin in each milliliter of suspension,
how many milliliters must be administered to give a patient 60 units?
100 units
=
60 units
1 ml
X ml
100 X
=
60
X
=
0.6 ml
MD0802
3-4
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