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PHARMACEUTICAL
CALCULATIONS — A BASIC REVIEW
Nicole M
Russo
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OBJECTIVE: To review mathematical topics used in pharmaceutical preparation, specifically ratios and proportions, percentage concentrations, and stock solutions.
DATA SOURCE: Online pharmaceutics sources and current pharmaceutics textbooks were consulted.
DATA SYNTHESIS: Ratios and proportions are basic tools for adjusting drug concentrations. Using proportions, medications can be provided in any concentration desired. By extending this technique to percentage concentrations, prescriptions can be interpreted and calculated. In the same manner, the ability to dilute stock solutions provides patient-specific drug delivery.
CONCLUSIONS: The mathematical concepts of ratios and proportions, percentage concentrations, and stock dilutions are essential for correct medication administration in any setting.
J Pharm Technol 2002;18:257-9.
ACPE Universal Program Number: 407-000-02-055-H01
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