Prescribers use abbreviations extensively in writing orders for drugs. The

enlisted soldier must be able to read such orders accurately. Examples of some orders

for drugs and the interpretations are given below.

a. **Example 1**.

Order:

Tab ii stat, then tab i bid

Interpretation:

2 tablets at once, then 1 tablet twice a day.

b. **Example 2**.

Order:

Tsp i pc & hs

Interpretation:

1 teaspoonful after meals and at bedtime.

c. **Example 3**.

Order:

2 ml IM stat & q12h

Interpretation:

2 ml intramuscularly at once and every 12 hours.

d. **Example 4**.

Order:

Tab iv stat, then tab ii q4h

Interpretation:

4 tablets at once, then 2 tablets every 4 hours.

For a review of basic mathematics, you can enroll in Subcourse MD0900, Basic

Mathematics, or Subcourse MED904, Pharmacology Math for the Practical Nurse.

Subcourse MD0900 covers fundamental operations and practical problems in fractions,

mixed numbers, decimals, percents, ratios, proportions, and square roots. Subcourse

MD0904 covers basic arithmetic, fractions, decimals, percentages, ratio and proportion,

and math required for pharmaceutical calculations.

The principles of ratio and proportion are tools with which the student can solve

many, if not all, dosage calculations. A firm understanding of these basics will enable

the student to deal with later sections in which common dose problems are solved by

applying simple ratio and proportion techniques.

MD0913

1-7

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