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NAPLEX!!!!! > Calculations > Flashcards

Calculations Flashcards

1
Q

Conversion of Aminophylline to Theophylline

A

Aminophylline x 0.8

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2
Q

Conversion of Theophylline to Aminophylline

A

Theophylline / 0.8

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3
Q

Shortcut for converting from PPM to a % strength

A

Move decimal left 4 places

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4
Q

Shortcut for converting % strength to PPM

A

Move decimal right 4 places

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5
Q

mOsmol/L =

A

Weight (g/L) / MW x # of particles x 1000

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6
Q

of dissociation particles in dextrose

A

1

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7
Q

of dissociation particles in mannitol

A

1

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8
Q

of dissociation particles in KCl

A

2

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9
Q

of dissociation particles in NaCl

A

2

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10
Q

of dissociation particles in sodium acetate (NaC2H3O2)

A

2

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11
Q

of dissociation particles in calcium chloride

A

3

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12
Q

of dissociation particles in sodium citrate (Na3C6H5O7)

A

4

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13
Q

E =

A

58.5i/MW(1.8)

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14
Q

mols =

A

g/MW

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15
Q

mmols =

A

mg/MW

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16
Q

mEq = (mg formula)

A

mg x valence / MW

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17
Q

mEq = (mmol formula)

A

mmols x valence

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18
Q

valence of ammonium chloride (NH4Cl)

A

1

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19
Q

valence of potassium chloride

A

1

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20
Q

valence of potassium gluconate (KC6H11O7)

A

1

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21
Q

valence of sodium acetate (NaC2H3O2)

A

1

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22
Q

valence of sodium bicarbonate (NaHCO3)

A

1

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23
Q

valence of sodium chloride

A

1

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24
Q

valence of calcium carbonate

A

2

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25
Q

valence of calcium chloride

A

2

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26
Q

valence of disodium phosphate

A

2

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27
Q

valence of ferrous sulfate

A

2

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28
Q

valence of magnesium sulfate

A

2

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29
Q

BMI = (metric)

A

kg/m^2

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30
Q

BMI = (US)

A

lbs/in^2 x 703

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31
Q

Use IBW for dosing which medications in normal and obese patients

A

aminophylline, theophylline and acyclovir

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32
Q

Use TBW for dosing which medications in obese patients

A

LMWHs, UFH, vancomycin

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33
Q

Use AbjBW for dosing which medications in obese patients

A

Aminoglycosides

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34
Q

Kcal/g for carbs in normal diet

A

4

35
Q

Kcal/g for fat in normal diet

A

9

36
Q

Kcal/g for protein in normal diet

A

4

37
Q

kcal/g of dextrose monohydrate in PN

A

3.4

38
Q

kcal/g of glycerol/glycerin in PN

A

4.3

39
Q

kcal/ml in IVFE 10%

A

1.1

40
Q

kcal/ml in IVFE 20%

A

2

41
Q

kcal/ml in IVFE 30%

A

3

42
Q

kcal/g in Amino acid solutions in PN

A

4

43
Q

Fluid requirements weight >20 kg

A

1500 ml + 20 ml (weight in kg - 20)

44
Q

Protein requirements for ambulatory, non-hospitalized (non-stressed) patietns

A

0.8-1 g/kg/day

45
Q

Protein requirements for hospitalized or malnourished patients

A

1.2-2 g/kg/day

46
Q

BEE (Harris Benedict Equation) for males

A

66.47 + 13.75 (kg) + 5(cm) - 6.76 (age)

47
Q

BEE represents which calories

A

non-protein calories

48
Q

BEE (Harris Benedict Equation) for females

A

655.1 + 9.6 (kg) + 1.85 (cm) - 4.68 (age)

49
Q

TEE =

A

BEE x activity factor x stress factor

50
Q

stress factor for minor surgery

A

1.2

51
Q

stress factor for infection

A

1.4

52
Q

stress factor for major trauma, sepsis, burns up to 30% BSA

A

1.5

53
Q

stress factor for burns over 30% BSA

A

1.5-2

54
Q

activity factor for non-ambulatory

A

1.2

55
Q

activity factor for ambulatory

A

1.3

56
Q

nitrogen intake =

A

grams protein / 6.25

57
Q

desireable NPC:N for most severely stressed patients

A

80:1

58
Q

desirable NPC:N for severely stressed patients

A

100:1

59
Q

desirable NPC:N for unstressed patients

A

150:1

60
Q

Maximum amount of dextrose in a PN

A

4 mg/kg/min or 7g/kg/day

61
Q

Max lipids in a PN

A

2.5 g/kg/day

62
Q

Ca corrected =

A

Ca reported + {(4-albumin) x 0.8]

63
Q

Withhold which trace elements in severe liver disease

A

manganese and copper

64
Q

withhold which trace elements in severe renal disease

A

chromium, molybdenum, and selenium

65
Q

Warfarin and tube feed management

A

hold feeds for 1 hour before and 1 hour after

66
Q

tetracycline and tube feed management

A

separate due to chelation

67
Q

cipro and tube feed management

A

DO NOT USE SUSPENSION: USE IR TABLETS: flush with water before and after administration

68
Q

Phenytoin and tube feed management

A

separate tube feeds by 2 hours

69
Q

Normal blood pH

A

7.35-7.45

70
Q

Anion gap =

A

Na - Cl - HCO3

71
Q

pH > pKa means

A

more of the acid is ionized

72
Q

pH = pKa means

A

the ionized and unionized forms are equal

73
Q

pH

A

more of the acid is unionized

74
Q

Henderson Hasselbalch for weak acids pH =

A

pKa + log [ salt/acid]

75
Q

Henderson Hasselbalch for weak bases (pKb) pH =

A

14-pKb + log[base/salt]

76
Q

Henderson Hasselbalch for weak bases (pKa) pH =

A

pKa + log [base/salt]

77
Q

% elemental calcium in calcium carbonate

A

40%

78
Q

% elemental calcium in calcium citrate

A

21%

79
Q

ANC normal range

A

2000-8000 cells/microliter

80
Q

ANC

A

predisposition to an infection

81
Q

ANC

A

high risk for developing an infection

82
Q

At what ANC can clozapine not be refilled

A

ANC

83
Q

ANC =

A

WBC x (%segs + %bands/100)

NAPLEX!!!!! (8 decks)

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