What is the required volume in mL of morphine 4 mg if the concentration available is 10 mg/mL?

To determine the required volume in mL of morphine 4 mg when the concentration available is 10 mg/mL, we need to use the formula:

Volume = Dose / Concentration

In this case, the dose required is 4 mg and the concentration available is 10 mg/mL. Plugging these values into the formula gives:

Volume = 4 mg / (10 mg/mL)

When you perform the calculation, you divide 4 by 10:

Volume = 0.4 mL

This means that to obtain a dose of 4 mg of morphine, 0.4 mL of the solution with a concentration of 10 mg/mL is required. This calculation helps ensure that the correct dosage is administered, which is crucial in medication management. Understanding how to convert between dosage, concentration, and volume is a fundamental skill in nursing and pharmacology.