Question

1. The physician's order reads morphine 15 mg IM now. The 5 mL vial in the medicine drawer is labeled Morphine 15 mg per mL. How much will you administer?

2. Ordered: Heparin 20,000 units IV now. You have on hand a 10 mL vial of Heparin with 10,000 units per mL. How many mL will you administer to the patient?

3. Phenergan cough syrup 25 mg po q 6 hours is ordered for your patient. You have on hand Phenergan 50 mg per ounce. How many milliliters will you administer for each dose? How many milliliters are needed for a 24 hour period?

4. You have to give your patients 2 teaspoons of Robitussin cough syrup q 4 hours How many milliliters will you give for each dose? How many mL will be required for a 24 hour period? (give answers for each dose as well as the total 24 hour dose)

Answer 1

1.Order is 15 mg morphine IM
5ml vial is available
1ml contains 15 mg
So we will administer 1ml of morphine.

2.Order is heparin 20,000 units IV
We have a vial of 10 ml in which there is 10,000 units per ml

So we will administer 2ml to the patient.

3.Order is 25mg per ounce every 6 hours
Available is 50mg/ounce
Since one ounce=30 ml
So 50mg/30ml is present.
So 1ml contains 5/3mg
So 25 mg will be available in 15 ml
So in one dose 15 ml is given
In 24 hrs 15×4=60 ml is given

4.1tsp=5ml
To be given is 2tsp that is 10ml every 4 hrs.
So for each dose 2×5=10ml is given
In 24hrs 6 doses will be required
So in 24 hrs 10×6=60ml
In 24hrs 60ml is required to be administered.