Dosage Calculation

by Jill Beavers-Kirby

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    Hi! My name is Jill Beavers-Kirby, and today, we're going to be talking about some common dosage calculations. So, what are some of the routine medication administration schedules, or what are the most common times that we give the medicines? So, a couple of abbreviations that you're going to see routinely throughout your career as a nurse are things like AC. It can be a capital A and a capital C or a lower case a and a lower case c, which means, before meals, Ad lib is as directed. BID is twice a day. PC is after meals. PRN is as needed. QID is four times a day. STAT means immediately. QAM means every morning. Q2H means every two hours. Q4H means every four hours. Couple of medication abbreviation times that you should not use and you should not see is one, QD, which in the old days make Q day, but now, we don't like to use that because it can cause confusion. So instead of writing QD, we will see daily. You want to use that instead of QD. So, what are some words that you have to know when you're giving medications? One is onset. This is the time that it takes a medication after it's given to start taking effect. The peak time of a medication is when the medication reaches its highest concentration in the body. The trough, it is the opposite of the peak. It's the point at which the medication is at its lowest level of effect in the body. You'll want to use trough times four dosing medications such as antibiotics, such as vancomycin. You'll want to trough time to know if you need to change the dose of the medication so that they're getting a steady state of the medication...

    About the Lecture

    The lecture Dosage Calculation by Jill Beavers-Kirby is from the course Physiological Integrity. It contains the following chapters:

    • Dosage Calculations
    • Routes of Medication Administration
    • Medication Measurement Systems
    • 5 Rights of Medication Administration

    Quiz for lecture

    Test your knowledge with our quiz for lecture Dosage Calculation.

    1. QD
    2. QID
    3. prn
    4. ac
    1. Metric
    2. Household
    3. Apothecary

    Author of lecture Dosage Calculation

     Jill Beavers-Kirby

    Jill Beavers-Kirby

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