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Pharmacy Tech > Conversion and Time Schedule > Flashcards

Conversion and Time Schedule Flashcards

1
Q

Bid

A

2 times daily

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2
Q

q12h

A

every 12 hours

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3
Q

tid

A

3 times daily

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4
Q

q8h

A

every 8 hours

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5
Q

qid

A

4 times daily

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6
Q

q6h

A

every 6 hours

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7
Q

1 tbs

A

3 tsp

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8
Q

1 tsp

A

5ml

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9
Q

1oz

A

30ml

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10
Q

1cup

A

8 oz

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11
Q

1 pt

A

16 oz

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12
Q

1qt

A

2 pt

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13
Q

1 gallon

A

4qt = 128 oz

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14
Q

1 fluid dram

A

60 minims

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15
Q

1 oz

A

8 fluid dram

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16
Q

1lb

A

454 g

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17
Q

1 gr

A

64.8 mg

18
Q

1 oz

A

30 g

19
Q

What is a diluent?

A

is an inert substance that does not have a concentration. The diluent adds either volume or mass to the preparation.

20
Q

How can concentration can be expressed?

A

In percent, ratio strength, and fractions

21
Q

What is express in weight/weight?w/w%)

A

number of grams of solute dissolved in 100g of final product.

22
Q

What is express in weight/ volume?(w/v%

A

number of grams of solute dissolved in 100 ml of solution

23
Q

What is express in volume/ volume?(v/v%):

A

number of milliliters of solute dissolved in 100ml of solution

24
Q

What is ratio strength?

A

used to designate the concentration of weak solutions or liquid preparations. Ex= 1:1000

25
Q

What is express in solids in solids?

A

1 g of solid in 1000g of solution preparation

26
Q

What is express in solids in liquids?

A

1g of solid in 1000ml of solution.

27
Q

What is express in volumes in volumes?

A

1ml of solute in 1000ml of solution

28
Q

What is the third method that use mg/ml?

A

fractions

29
Q

How to find percentage to mg/ml

A

multiply the percentage strength by 10

ex: 5% (w/v) = 5mg/ml x10 = 50mg/ml

30
Q

How to find ratio to mg/ml

A

divide the ratio by 1000

ex:1:20,000 (w/v) = 20,000/1000 = 1mg/20ml

31
Q

How to get product strength expressed as (g/L)

A

convert the numerator to milligram and divide by the number of milliliters in the denominator
1g/100ml=1000mg/100ml

32
Q

What does IW stand for?

A

initial weight

33
Q

What does IV stand for?

A

initial volume

34
Q

What does IS stand for?

A

initial concentration

35
Q

What does FW stand for?

A

final weight

36
Q

What does FV stand for?

A

final volume

37
Q

What does FS stand for?

A

final concentration

38
Q

What is the formula to calculate the dilution process?

A

(IS)(IW or IV) = (FS)(FW or FV)

39
Q

How can the amount of diluent can be calculated?

A

(FW or FV)-(IW or IV)= amount of diluent

40
Q

What should you remember when using strength?

A
  1. give ratio strength is given, convert to percentage strength
  2. reduce to the lowest term before performing the calculation
  3. initial strength always greater than the final strength
  4. Final weight is greater than the initial weight.
41
Q

What is alligation?

A

method to calculate the number of parts of ingredients when they are mixed to prepare a mixture of desire strength.

Pharmacy Tech (9 decks)

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