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29 Cards in this Set
- Front
- Back
Gram is used to measure . . .
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weight
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Liter is used to measure . . .
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volume
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Meter is used to measure . . .
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length
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Doses are calculated using metric measurements that relate to . . .
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weight and volume
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Of the three things above, what isn't used to calculate doses?
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Meter isn't used to calculate doses
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International System of Units is sometimes abbreviated . . .
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SI
an abbreviation for the French System International d'Unites |
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why do we use the metric system and not the Apothecary system?
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metric is more precise
Ex babies are weighed in grams & kilograms, and adults in kilograms, not lbs. & oz.s |
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what is used to measure someone's height?
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linear measurements in meter & centimeters
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Kilo
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1,000 one thousand times
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Centi
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0.01 one hundreths part
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Milli
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0.001 one thousanths part of
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Micro
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0.000001 one millionith part of
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Hecto
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100 one hundred times
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Deka
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10 ten times
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Deci
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o.1 one tenth
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mcg means ?
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microgram or µg
BUT don't use µg b/c it looks like mg and can cause lots of trouble, see why? |
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is it ml or mL ?
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mL
the L is capitalized on purpose |
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gram will be used as gm or Gm
what are we talking about? |
Use standard SI notation
Ex gram g microgram mcg milligram mg kilogram kg liter L milliliter mL |
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we don't use quanities with a fraction . . .
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use: 0.4g or 0/5L
NOT 2/5 g or 1/2 L |
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write the abbrevations where?
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after the quanity
Ex 1,000 mg NOT mg 1,000 |
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weight is in grams
1,000 mg = ? |
1 g
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Volume uses the what abbreviation?
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L for Liter
1,000 mL = 1 L 1mL = 0.001 L |
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cubic centimeter is how much space?
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the space 1mL of liquid occupies
abbreviated as cc mL and cc are used interchangibly BUT mL is used for volume, not cc! ************************** See, a cup will show mL on its side, not cc's. |
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Got to memorize this:
1 kilogram kg = 1,000 g 1 gram g = 1,000 milligrams mg 1 milligram mg = 1,0000 what??? |
mcg
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Got to memorize this:
1 Liter = 1,000 milliliters theres the deal with pints and quarts being almost the same as metric. what about this? |
the thing is pints & quarts aren't used around hospital areas BUT you'll run into it in a home enviroment so you have to know it for that
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so
1 pint ≈ 500 mL 1 quart ≈ 1,000 mL whats wrong here? |
not exact, both Apothocary units are less than the metric
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Conversions b/t Metric Units Now
Rule 1 to convert a smaller unit to a larger one, ...? |
divide by moving the decimal point 3 places to the left
Ex 100mL = 0.1L |
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another example of converting a smaller unit to a larger one ...
Ex 50mg = ...? |
50 mg = 0.05g
Placing the zero in front of the decimal is a BIG DEAL |
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To convert a larger number to a smaller one,
what? |
multiply by moving the decimal 3 places to the right
Ex 0.75g = 750mg Ex 0.04kg = 40g |