Dosage calculation help?

  1. I answered this question: Ordered 18,000 mg of Amoxicillin. Amoxicillin is available as 0.004 kg per 11 mL. How much will the nurse draw up?

    The correct answer is 49.5ml but I put 50ml.
    I assumed that you would round up to the most realistic dosage you can give a patient, so would 50ml be the correct answer in both test and book world?
    My dosage calculation test is tomorrow and I don’t want small things like this to fail me.
  2. Visit OsceanSN2019 profile page

    About OsceanSN2019, CNA

    Joined: Jun '17; Posts: 196; Likes: 149
    3rd Semester Nursing Student; from US


  3. by   amoLucia
    are you sure about that dose?
  4. by   OsceanSN2019
    49.5 was the answer I got but rounded it to 50 mL...
  5. by   Wuzzie
    Generally with liquid medications yes you would round up to the next measurable dose. But I agree with the previous poster are you sure about the dose? The one you gave is no where near the correct dose for the medication.
  6. by   chare
    It seems as if the instructor is creating random, and atypical doses and concentrations. Not only is the dose incorrect, the concentration provided, 0.004 kg/11 mL (363.63 mg/mL) isn't a standard concentration either. Having said that, the answer provided is correct.

    Regarding the volume. If the medication were prepared in the pharmacy at my facility, they would prepare and label it as 49.5 mL, without rounding, as that was what was ordered. Just as they would, using the parameters in the OP, if 18,285 mgs were ordered. Even though neither is realustic nor practical.

    To the OP's original question. Your instructor should have provided her/his rounding expectations. If not, and you are unsure, you need to clarify this with her/him ptior to submitting your test.

    Best wishes!
  7. by   zebrapants1
    First question would be whether or note that's the right dose. Also, did you mean to type kg/ml?