If the entire vial is used for one patient, how many milligrams does the patient receive?

If the entire vial is used for one patient, how many milligrams does the patient receive?

• A. 0 mg
• B. 15 mg
• C. 30 mg
• D. 45 mg

Answer: (B)

The amount a patient receives is the total amount of drug contained in the vial, since you’re using the entire vial. To figure that out, multiply the concentration by the volume (mg/mL × mL) to get the total milligrams in the vial. If the vial’s label indicates a total of 15 mg, then using the whole vial delivers 15 mg to the patient. So when the entire vial is used, the dose equals the vial’s total content. That’s why 15 mg is the correct amount in this case. Other options would require either not using the whole vial or having a different total content, which isn’t the scenario here.

The amount a patient receives is the total amount of drug contained in the vial, since you’re using the entire vial. To figure that out, multiply the concentration by the volume (mg/mL × mL) to get the total milligrams in the vial. If the vial’s label indicates a total of 15 mg, then using the whole vial delivers 15 mg to the patient.

So when the entire vial is used, the dose equals the vial’s total content. That’s why 15 mg is the correct amount in this case. Other options would require either not using the whole vial or having a different total content, which isn’t the scenario here.