Nurses use proportions to determine the amount of a drug to administer when the dose is measured in milligrams but the drug is packaged in a diluted form in milliliters.

For example, to find the number of milliliters of fluid needed to administer 300 mg of a drug that comes packaged as 120 mg in 2 mL of fluid, a nurse sets up the proportion

where x represents the amount to administer in milliliters. Use this method to find the correct dose for each prescription.

120 mg of amikacin packaged as 100 mg in 2-mL vials

Transcribed Image Text:

120 mg 2 mL 300 mg x mL