Ordered morphine 2mg IV every 12 hours. Morphine is available in a 10mg/2ml prefilled syringe. How many mL should the nurse administer?

Ordered morphine 2mg IV every 12 hours. Morphine is available in a 10mg/2ml prefilled syringe. How many mL should the nurse administer?

Answer

0.4ml

Explanation

To administer 2mg per ml , 0.4 ml can be taken from the available concentration.

This because from the available morphine, each Ml has 5mg.

To pick 2mg , 2mg is divided by 5mg to get 0.4ml.

2 mg / 5 mg = 0.4 ml

or

10 mg = 2 mL

2 mg = 2*2/10 = 0.4 mL