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Formulas > NAPLEX Formulas > Flashcards

NAPLEX Formulas Flashcards

1
Q

tsp (t) = ____ mL

A

5

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2
Q

tbsp (T) = ____ mL

A

15

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3
Q

1 fl oz = ____ mL (approx); ____ mL (actual)

A

30; 29.57

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4
Q

1 cup = ____ oz

A

8

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5
Q

1 pint = ____ oz

A

16

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6
Q

1 quart = ____ pints

A

2

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7
Q

1 gallon = ____ quarts

A

4

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8
Q

1 kg = ____ pounds (lbs)

A

2.2

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9
Q

1 oz = ____ grams (g)

A

28.4

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10
Q

1 lb = ____ g

A

454

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11
Q

1 grain = ____ mg (approx.); ____ mg (actual)

A

65; 64.8

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12
Q

mEq to mmol is ___:___ for monovalent ions

A

1:1

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13
Q

mEq to mmol is ___:___ for divalent ions

A

1 : 0.5

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14
Q

1 inch (in) = ____ centimeters (cm)

A

2.54

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15
Q

1 meter (m) = ____ cm

A

100

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16
Q

% w/v

A

X g / 100 mL

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17
Q

% w/w

A

X g / 100 g

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18
Q

% v/v

A

X mL / 100 mL

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19
Q

Percentage strength

A

100 / Ratio strength

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20
Q

Ratio strength

A

100 / Percentage strength

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21
Q

Parts per million (PPM) → Percentage strength: Move the decimal ____ 4 places

A

left

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22
Q

Percentage strength → Parts per million (PPM): Move the decimal right ____ places

A

4

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23
Q

Specific Gravity (SG)

A

weight of substance (g) / weight of equal volume of water (g) or g / mL

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24
Q

Alligation

A

Use proportions to calculate amount of high % and/or low % required

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25
Q

mOsmol/L

A

Wt of substance (g/L) / MW (g/mole) x (# particles) X 1,000

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26
Q

Isotonicity (E value)

A

58.5(i) / [(MW of drug)(1.8)]

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27
Q

mols

A

g / MW

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28
Q

mmols

A

mg / MW

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29
Q

mEq

A

(mg x valence) / MW or mmols x valence

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30
Q

Corrected Calcium for Albumin < 3.5

A

Ca(reported) + [(4.0 - albumin) x 0.8]

31
Q

Dextrose Monohydrate = ____ kcal / gram

A

3.4

32
Q

Amino Acid Solutions = ____ kcal / gram

A

4

33
Q

Injectable Lipid Emulsions (ILE) 10% = ____ kcal / mL

A

1.1

34
Q

ILE 20% = ____ kcal / mL

A

2

35
Q

ILE 30% = ____ kcal / mL

A

3

36
Q

Determining fluid needs when weight > 20kg

A

1,500 mL + (20 mL)(Weight in kg - 20)

*can estimate using 30-40mL/kg/day

37
Q

Enteral carbs, protein = ____ kcal/gram

A

4

38
Q

Enteral fat = ____ kcal/gram

A

9

39
Q

Total Energy Expenditure (TEE)

A

BEE x activity factor x stress factor

40
Q

Nitrogen (g) from protein

A

protein intake (g) / 6.25

41
Q

Cockcroft-Gault Equation

A

CrCl (mL/min) = [140 - age] / [72 x SCr] x weight (kg) (x 0.85 if female)

42
Q

Body Mass Index (kg/m²) formula

A

weight (kg) / height (m)² = [weight (lb) / height (inches)²] X 703

43
Q

IBW (males)

A

50 kg + (2.3 kg) (# of in. over 5 feet)

44
Q

IBW (females)

A

45.5 kg + (2.3 kg) (# of in. over 5 feet)

45
Q

AdjBW

A

IBW + 0.4 (TBW - IBW)

46
Q

Which body weight do you use for underweight patients

A

Total body weight (TBW)

47
Q

Which body weight do you use for normal weight/obese patients for acyclovir, aminophylline, levothyroxine, theophylline?

A

ideal body weight

48
Q

Which body weight do you use for obese patients for aminoglycosides?

A

AdjBW

49
Q

Acidosis pH < ______

A

7.35

50
Q

Alkalosis pH < _______

A

7.45

51
Q

Respiratory alkalosis pCO2 < ______

A

35

52
Q

Respiratory acidosis pCO2 > ______

A

45

53
Q

Metabolic alkalosis HCO3 > ______

A

26

54
Q

Metabolic acidosis HCO3 < _______

A

22

55
Q

1 cup = ___ mL

A

240 (approx.)

56
Q

1 pint = ___ mL

A

480 (approx.)

57
Q

1 quart = ___mL

A

960 (approx.)

58
Q

1 gal = ___ mL

A

3850 (approx.)

59
Q

Dehydration

A

BUN:SCr > 20:1

Pt is dehydrated!

60
Q

Anion gap (AG)

A

Na - Cl - HCO3

61
Q

Weak acid =

A

pH = pKa + log[salt/acid]

62
Q

Weak base =

A

pH = pKa + log[base/salt]

63
Q

Weak acid % ionization =

A

100/[1+100^(pKa-pH)]

64
Q

Weak base % ionization =

A

100/[1+100^(pH-pKa)]

65
Q

Absolute neutrophil count (ANC) =

A

WBC [ (%segs + % bands)/100]

Cells/mm^3

66
Q

Fahrenheit to Celsius 

A

Cel it’s = (degree F - 32)/1.8

67
Q

Celsius to Fahrenheit

A

F = (C x 1.8) +32

68
Q

Time to burn (TTB)=

A

TTB, ( with sunscreen and min) = SPF x TTB(without sunscreen)

69
Q

LDL =

A

TC - HDL - TG*/5

  • do not use if TG > 400
70
Q

Minimum weighable quantity (MWQ)

A

Sensitivity requirement/acceptable error (usually 0.05)

Sensitivity requirement is usually 6mg

71
Q

BSA =

A

Square root[Ht(cm) x Wt(kg) / 3600]

Units = m^2

72
Q

MAP

A

[(2 x diastolic pressure) + systolic pressure] /3

73
Q

Total phenytoin correction for albumin <3.5

A

Total phenytoin measured/(0.2 X albumin) +0.1

74
Q

1L = ___ dL

A

10

So move 1 decimal to right if L to dL

Formulas (4 decks)

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