NURS 221: MEDICINE CALCULATION TEST STUDY GUIDE WITH COMPLETE SOLUTION!!

NURS 221: MEDICINE CALCULATION TEST STUDY
GUIDE WITH COMPLETE SOLUTION!!
Summary of Metric Units / Abbreviations
answers: 1 kilogram (kg) = 1000 grams (gm)
1 gram (g) = 1000 milligrams (mg)
1 milligram (mg) = 1000 micrograms (mcg)
1 kiloliter (kL) = 1000 liter (L)
1 Liter (L) = 1000 milliliter (mL)
1 milliliter = 1000 microliter (mcL)
1km = 1000 meters
1 m = 1000 centimeters
1 cm = 10 millimeter
Summary: Metric, Apothecary, Household System Equivalents


answers: I kg = 1000 g = 2.2 pound (lb)
30 g = 1 ounce (oz) = 16 ounces = 1 lb
1L = 1000 mL = 1qt, 32 fl oz
0.5 L = 500 mL = 1 pt, 16 fl oz
30 mL = 1 oz = 6t, 2T
1 mL = 15 drops (gtt)
2.54 cm = 1 inch
60 minutes = 1 hour
Metric Measures and Relationships

,answers: WEIGHT: Values and relationship: kg to g to mg to mcg; Conversion
Factor: 1000
VOLUME: Values and Relationship: kL to L to mL to mcL; Conversion Factor:
1000
METRIC CONVERSION METHOD A


answers: Converting Larger value to Smaller value
Multiply with conversion value
METRIC CONVERSION METHODS Method A: Practice Example = Converting
Larger value to Smaller value - Multiply with conversion value


answers: 1. Change 2 grams to milligram: 2 grams * 1000 mg = 2,000 mg
2. Change 10 milligrams (mg) to microgram (mcg): 10 mg * 1000 mcg = 10,000
mcg
3. Change 4 liters (L) to milliliters (mL): 4 L * 1000 mL = 4,000 mL
METRIC CONVERSION METHOD B


answers: Method B: converting Smaller value to Larger value
Divide with conversion value
METRIC CONVERSION METHODS Method B: Practice Example
Formula: converting Smaller value to Larger value - Divide with conversion value


answers: 1. Change 8 grams (g) to kilogram (kg): 8 g / 1000 kg = 0.008 kg
2. Change 750 micrograms (mcg) to milligrams (mg): 750 mcg / 1000 mg = 0.75
mg
3. Change 2400 milliliter (mL) to liter (L): 2,400 mL / 1000 L = 2.4 L

, APPLYING CONVERSIONS TO DRUG ORDERS Practice Question. CASE
STUDY: Condition: Child with fever (>102 F-(38.89 C)) needs acetaminophen
(TYLENOL) Safe Dose Range is 10-15mg/kg/dose every 4-6 hours PRN
fever. Patient's Weight = 44 pounds


answers: 1. What is weight in Kg? 44 pounds / 2.2 pounds = 20 kg
2. What range of dose in mg should you expect to be ordered by the Provider? 10
mg (20)kg/dose = 200 mg / 15 mg (20)kg/dose = 300 mg
Calculate Safe Dose Range = 200 mg-300 mg/dose every 4-6 hours PRN, if higher
or lower, question it
OTHER MEASURES


answers: PERCENT: %
TEMPERATURE: Celsius [C], Fahrenheit [F]
NOTE: International Units and Milliequivalents (mEq) *Do not need conversion
TEMPERATURE CONVERSION


answers: 1. To convert F to C
(F-value minus 32) multiply by 9/5 OR C = (F - 32) / 1.8
2. To convert C to F
(C-value multiply 9/5) + 32 OR F = (C x 1.8) + 32
NOTE: (9/5 = 1.8)
Temperature Conversion Practice Problems. What are the following values in
Celsius (C)?


answers: 1. 98.6 F: (98.6 - 32) /1.8 = 66.6/1.8 = 37 C
2. 104 F: (104 - 32)/1.8 = 72/1.8 = 40 C