Calculations are still a significant source of drug error Nursing competence in drug calculations has been a cause for concern (Duffin, 2000; Coombes, 2000). Hutton .. Ward Manager, (Adult Autistic Spectrum Ward).
There are 3 primary methods for calculation of medication dosages; Dimensional Analysis, Ratio Proportion, and Formula or Desired Over Have Method. Desired Over Have or Formula Method uses a formula or equation to solve for an unknown quantity (x) much like ratio proportion.
Calculation of Doses Chapter -3 1/23/2015 By: Negese Sewagegn m2 • If the adult dose of a drug is 100 mg, calculate the approximate dose.