Questions and Answers
What is alligation?
A mathematical method of solving problems that involves the mixing of two solutions or two solids possessing different percentage weights to achieve a desired third strength.
What is the apothecary system?
A system of measurement once used in the practice of pharmacy to measure both volume and weight.
What does markup refer to?
Amount, usually a percentage, added to a wholesale price in order to make a profit.
What is a conversion factor?
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What does volume refer to?
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What is the retail price?
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What is a diluent?
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What is international time?
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What is drop factor?
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What does wholesale cost refer to?
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What is the avoirdupois system?
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What is the household system?
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What does dilution mean?
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What is drip rate?
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What is the international system of units?
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What does flow rate refer to?
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What is the metric system?
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The ability to manipulate conversions is a required competency of pharmacy technicians.
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Not all transactions and calculations need to be checked by a pharmacist.
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A pharmacy technician can assume that a person understands the meaning of a measurement.
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It is important to place the proper units (mL, mg, or g) next to the number amount.
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One of the most common errors made in pharmacy is placing a zero in front of a decimal.
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A pharmacy technician should convert measurements to the metric system because it is the approved system of measurement for pharmacy in the US.
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Calculations should be checked at least three times before asking a pharmacist to check them.
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The pharmacy technician should show the parent of a pediatric patient how to measure the correct dosage.
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If you round off at each step of a calculation, your answer will be very accurate.
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If an IM dose is calculated to be greater than 5ml, an error has occurred in either the prescribed amount or the calculation.
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1 teaspoon equals how many mL?
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What does mL stand for?
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What does L stand for?
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What does g stand for?
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What does m stand for?
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What does mcg stand for?
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What does kg stand for?
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One tablespoon equals how many mL?
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One fluid ounce equals how many mL?
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One pint equals how many mL?
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Study Notes
Alligation
- A method for mixing two solutions or solids with different percentages to reach a desired strength.
Apothecary System
- Measurement system used historically in pharmacy for volume and weight.
Markup
- The percentage added to wholesale prices to determine profit margin.
Conversion Factor
- A mathematical fraction used to change one unit into another without altering the value.
Volume
- The space occupied by a liquid within a container.
Retail Price
- Calculated as the wholesale price plus markup.
Dilutent
- An inert substance added to reduce the strength of a preparation.
International Time
- A 24-hour clock format where hours count continuously, not distinguishing between AM and PM.
Drop Factor
- Indicates the size of drops from intravenous tubing, expressed as gtt/mL.
Wholesale Cost
- The price at which a product, especially medicine, is purchased before markup for resale.
Avoirdupois System
- Measurement system for weight based on ounces and pounds, previously used in pharmacy.
Household System
- Common US measurement system that uses household items for measuring volumes.
Dilution
- The process of increasing volume or weight while reducing concentration by adding a dilutent or solvent.
Drip Rate
- Number of drops administered over a specific time period (gtt/min) in intravenous infusions.
International System of Units
- Measurement system based on seven base units and multiples of 10, derived from French Système International.
Flow Rate
- Rate at which IV solution is administered, expressed in mL/min, mL/hr, or gtt/min.
Metric System
- The standardized system of measurement for US pharmacy, based on multiples of 10.
True or False Statements
- Manipulating conversions is essential for pharmacy technicians. (True)
- Not all transactions need verification by a pharmacist. (False)
- Assuming patients understand measurement meanings is appropriate. (False)
- Proper units (mL, mg, g) must always accompany numerical amounts. (True)
- Common pharmacy errors include incorrect decimal placements. (False)
- Conversion to the metric system is advisable for pharmacy technicians. (True)
- Calculations should be verified multiple times before pharmacist review. (True)
- Instructing caregivers on measuring dosages correctly is unnecessary. (False)
- Rounding at each calculation step leads to accuracy. (False)
- An IM dose exceeding 5 mL indicates a potential error. (True)
Measurement Abbreviations
- 5 mL: Equivalent to 1 teaspoon.
- mL: Milliliter.
- L: Liter.
- g: Gram.
- m: Meter.
- mcg: Microgram.
- kg: Kilogram.
- 15 mL: Equivalent to 1 tablespoon.
- 30 mL: Equivalent to 1 fluid ounce.
- 480 mL: Equivalent to 1 pint.
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Description
This quiz covers key terms and definitions related to conversions and calculations in mathematics, particularly focusing on mixed solutions and measurement systems. Learn important concepts like alligation and the apothecary system to enhance your understanding and problem-solving skills.
