For an order of meperidine 75 mg, how many mL should be given if the solution is 100 mg/mL?

To determine how many mL of meperidine to administer for an order of 75 mg when the concentration of the solution is 100 mg/mL, you would use the formula:

Volume (mL) = Desired Dose (mg) / Concentration (mg/mL)

Substituting the values gives:

Volume (mL) = 75 mg / 100 mg/mL = 0.75 mL

Therefore, the correct dosage to administer in this case would be 0.75 mL, as this volume delivers the prescribed dose of 75 mg. This calculation illustrates how the concentration of the medication relates to the dose required by the patient, ensuring that they receive the appropriate amount for effective treatment. Understanding dosage calculations is vital in nursing practice to ensure patient safety and effective medication administration.