This
module presents a step-by-step process for calculating medications using various
routes.
For IVP, IM, SQ, NG,
GT or PO medications Use steps 1-4.
For IVPB medications,
use steps 1- 6.
Step 1: DOSAGE
RANGE (MG/KG/DAY, MG/KG/DOSE, etc.)
Locate
the recommended minimum and maximum dosage range from a trusted source.
Step 2: TOTAL
DAILY DOSE (MG/DAY, mcg/day etc.)
Calculate
the MG/DAY by adding up all doses given in one day. SKIP this step if recommended dosage range is mg/kg/DOSE.
Step 3: DOSE
CALCULATION (MIN, MAX, ACTUAL)
Calculate
the MINIMUM, MAXIMUM and ACUTAL DOSAGE using the values from the recommended
dosage range and the medication order. The actual dosage should be between the
minimum and maximum.
Step 4: CONCENTRATION
(MG/ML)
Calculate
the amount to draw up from the vial (or verify in a prefilled syringe) of the
available solution.
Step 5: DILUTION
(MG/ML)
Calculate
the amount of extra fluid needed to add to the medication. Consider various
factors when calculating this volume (see detailed instructions).
Step 6: IV PUMP
RATE (ML/HR)
Calculate
the pump rate based on the medication volume after dilution and infusion time
(i.e. 20-30 minutes). Consider various factors when calculating this rate (see
detailed instructions).
This
module provides you with various tools to learn more about each of these steps
and practice your calculations. On the following pages you will find the following:
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Detailed Instructions
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Examples using 3 different methods: Dimensional Analysis, Ratio
Proportion, and Logic
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Fill-in style worksheet
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Quick Reference Sheet
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Conversions Sheet
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Practice Quiz
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Practice Quiz Answer Sheet