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# Dosage Calculation Conversion Chart Self Study Notes

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CALCULATION CONVERSION CHART
(most commonly used)
1000 g = 1 kg. 1000 mg = 1 g
1000 mcg = 1 mg. 1 mL = 1 cc
5 mL = 1 tsp. (t.) 15 mL = 1 tbsp. (T.)
30 mL = 1 oz. 2.2 lb = 1 kg
2.5 cm = 1 inch 1000 mL = 1 L
DOSAGE EQUATIONS
1. D (desired) x Q (quantity) = X (dose)
H (have)
2. Intravenous:
Total mLs X drops = drops
Time (as expressed in minutes) mL min
IVPB: To calculate mL/hr to program a pump - Total mLs x 60
Time (as expressed in minutes)
3. lbs. = kg Kg X Dose = desired dose
2.2
4. Converting in the metric system:
Gram to mg move the decimal RIGHT 3 places (Example: 0.5 g = 500 mg)
mg to mcg move the decimal RIGHT 3 places (Example: 0.325 mg = 325 mcg)
mg to gram move the decimal LEFT 3 places (Example: 350 mg = 0.350 g)
mcg to mg move the decimal LEFT 3 places (Example: 125 mcg = 0.125 mg)
Move decimal RIGHT 3 places
Kg g mg mcg
Move decimal LEFT 3 places

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5. Temperature Conversions
Fahrenheit to Celsius C = F 32
1.8
Celsius to Fahrenheit: F = C (1.8) + 32
6. Body Surface Area Formula
m
2
= height (cm) x weight (kg)
3600
7. Body Mass Index (BMI) BMI = weight in kg
(height in millimeters)²

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CALCULATION CONVERSION CHART (most commonly used) 1000 g = 1 kg. 1000 mg = 1g 1000 mcg = 1 mg. 1 mL = 1 cc 5 mL = 1 tsp. (t.) 15 mL = 1 tbsp. (T.) 30 mL = 1 oz. 2.2 lb = 1 kg 2.5 cm = 1 inch 1000 mL = 1L DOSAGE EQUATIONS 1. D (desired) x Q (quantity) = X (dose) H (have) 2. Intravenous: Total mLs Time (as expressed in minutes) X drops mL IVPB: To calculate mL/hr to program a pump - = drops min Total mLs x 60 Time (as expressed in minutes) 3. lbs. = kg 2.2 Kg X Dose = desired dose 4. Converting in the metric system: Gram to mg – move the decimal RIGHT 3 places (Example: 0.5 g = 500 mg) mg to mcg – move the decimal RIGHT 3 places (Example: 0.325 mg = 325 mcg) mg to gram – move the decimal LEFT 3 places (Example: 350 mg = 0.350 g) mcg to mg – move the decimal LEFT 3 places (Example: 125 mcg = 0.125 mg) Move decimal RIGHT 3 places Kg g mg mcg Move decimal LEFT 3 places 5. Temperature Conversions C = F – 32 1.8 Fahrenheit to Celsius Celsius to Fahrenheit: 6. F = C (1.8) + 32 Body Surface Area Formula m2 = √height (cm) x weight (kg) 3600 7. Body Mass Index (BMI) BMI = weight in kg (height in millimeters)² Basic Medication Administration Abbreviations Abbreviation Meaning Route: IM IV IVPB subcut SL ID GT NG p.o. p.r. Intramuscular Intravenous Intravenous Piggyback subcutaneous sublingual intradermal gastrostomy tube nasogastric tube by mouth, orally pr rectum, rectally Frequency: a.c. p.c. ad.lib. p.r.n ...
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