Medication domains | Domain-specific knowledge | Procedures (domain-specific rules for feedback and worked examples) | Underlying domain-specific principles for all domains | Learning tasks (examples of mathematical medication scenarios in a CBVLE) | Underlying principles (examples of exercises for computational abilities in a CBVLE) |
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Liquid medication (incl. dilution) | Ratio of the dissolved substance and diluent | Mass/volume (m/v) 1% = 1 gram dissolved substance/100 ml 1‰ = 1 gram dissolved substance/1000 ml (1 litre) Volume/volume (v/v) 1% = 1 ml liquid/100 ml 1‰ = 1 ml liquid/1000 ml (1 litre) | Quantities Units Conversions of ratios: a. Fractions b. Decimals c. Numbers d. Percentage Elations between a, b, c, and d Divide Multiplication h, min, s (time ratio) Elements of the prescription dispensed Extract numerical information Apply calculations correctly and accurately | P. suffers severe pain. He is prescribed 15 mg morphine every 4 hours. Stocked: 1 ml morphine ampoules of 15 mg/ml. How many ml do you inject every four hours? How many ml is this per day? | 16 × 8 = 12 × 9 = 1/4 + 3/4 = 1/4 = 3/3 + 5/3 = 3/4 − 2/8 = 14/5 − 9/5 = 3/4 × 4/5 = 5/10 × 4/8 = 4/5:2/5 = 3/5:1/3 = 1/4 = 0.25 1/20 = 0.05 0.09 = ….% 0.50 = ….% 75% = 0.75 30% = 0.30 How much is: 5% of 1000 ml? 4% of 250 ml? 1 L = …ML 1 ML = …CC |
Infusion fluid | Drip rating | 20 drops/ml 1. Calculate the total number of drips 2. Calculate the drips/h 1. 3. Calculate the drips/min | G. is administered a drip of 500 ml 0.9% NaCl. in three hours. How many drips are administered to G. per minute? | ||
Solid medication | Dosage calculation for tablets | Count, divide, multiply, work with fractions, reference measurements: 24 h in a day 60 min in an h 50% = 1/2 1/4 = 25% etc. | F. suffers from cystitis. She receives treatment with antibiotics for six days: 750 mg Amoxicillin every 12 hours. Stocked: Flemoxin with 375 mg Amoxicillin per tablet. How many tablets should F. swallow during treatment? |