Question

Your patient is ordered 25 units of subcutaneous insulin to be administered before each meal. The insulin is available in a concentration of 150 units/ml. How many mL will you administer at each meal?

a) 0.17 mL
b) 0.25 mL
c) 0.30 mL
d) 0.15 mL

Answer 1

To determine the volume of insulin to administer, divide the ordered dose in units by the concentration in units/mL. For a 25-unit dose with a concentration of 150 units/mL, the calculation results in 0.17 mL, which is option (a).

Step-by-step explanation:

To calculate how many mL of insulin you will administer at each meal, you can use the following formula: Volume to administer (mL) = Ordered dose (units) ÷ Concentration (units/mL). Using the information provided in the question:

Volume to administer = 25 units ÷ 150 units/mL = 0.1667 mL

When choosing an option from the multiple choice answers, we round 0.1667 to have two decimal places, which gives us 0.17 mL, making the answer (a) 0.17 mL.