Answer:
2.5 mL
Explanation:
In order to solve dosage calculation problems like this one, the ordered amount of medication is to be multiplied by the dosage strength in order to determine the amount to administer. The following formula represents this equation:
ordered amount × dosage strength = administered dose
The ordered amount is the quantity of medication that is written and prescribed for the patient, typically documented by a provider (e.g. physician) and fulfilled by a nurse. In this case, it is 125 milligrams (125 mg).
The dosage strength is the concentration of medication available from the pharmacy's stock, usually listed on the medication label as a proportion of mass per volume. In this case it is 50 milligrams per milliliter (50 mg/mL).
Now, plugging this information in, the calculation can be solved.
125mg × (mL / 50mg)
mg in both numerator and denominator cancel each other out, leaving mL as the remaining unit of measurement.
125 × (mL / 50)
= 125 mL / 50
= 2.5 mL
The patient should be administered 2.5 mL of the IV medication.