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NAPLEX Prep > Required Formulas > Flashcards

Required Formulas Flashcards

1
Q

teaspoon (tsp) to milliliters (mL)

A

1 tsp = 5 mL

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2
Q

tablespoon (T) to milliliters (mL)

A

1 T = 15 mL

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3
Q

fluid oz to milliliters (mL)

A

1 fl oz = 30 mL (actual 29.57)

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4
Q

cup to oz

A

1 cup = 8 oz (240 mL)

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5
Q

pint to oz

A

1 pint = 16 oz (480 mL)

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6
Q

quart to pint

A

1 quart = 2 pints (960 mL)

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7
Q

gallon to quart

A

1 gallon = 4 quarts (3,840 mL)

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8
Q

kilogram (kg) to pounds (lbs)

A

1 kg = 2.2 lb

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9
Q

oz to grams (g)

A

1 oz = 28.4 g

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10
Q

pounds (lb) to grams (g)

A

1 lb = 454 g

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11
Q

grains to miligrams (mg)

A

1 grain = 65 mg (actual 64.8)

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12
Q

mEq to mmol

A

monovalent ions = 1 mEq : 1 mmol

dilavent ions = 1 mEq : 0.5 mmol

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13
Q

inch (in) to centimeters (cm)

A

1 in = 2.54 cm

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14
Q

meter (m) to centimeters (cm)

A

1 m = 100 cm

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15
Q

% w/v

A

x g/100 mL

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16
Q

% w/w

A

x g/100 g

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17
Q

% v/v

A

x mL/ 100 mL

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18
Q

percentage strength

A

100 / ratio strength

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19
Q

ratio strength

A

100 / percnetage strength

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20
Q

parts per million (PPM) to percentage strength

A

move the decimal left 4 places

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21
Q

percentage strength to parts per million (PPM)

A

move the decimal right 4 places

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22
Q

specific gravity

A

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

23
Q

osmolarity (mOsmol/L)

A

( weight of substance in g/L / molecular weight in g/mole) x # of particles x 1,000

24
Q

Isotonicity (E value)

A

E = (58.5 x i) / (MW of drug x 1.8)

25
Q

moles

A

moles = g/MW

26
Q

mEq

A

(mg x valence) / MW

27
Q

correct calcium

A

Ca(corrected) = calcium + [(4-albumin) x 0.8]

28
Q

parenteral nutritional calories: dextrose

A

dextrose = 3.4 kcal/gram

29
Q

parenteral nutritional calories: amino acids

A

amino acid solutions = 4 kcal/gram

30
Q

parenteral nutritional calories: fat

A

fat = 9 kcal/gram

31
Q

total energy expenditure

A

TEE = BEE x activity factor x stress factor

32
Q

grams of nitrogen from protein

A

nitrogen (g) = protein intake (g) / 6.25

33
Q

creatinine clearance (cockcroft-gault)

A

CrCl = (140-age)/(72xSCr) x weight (kg) x 0.85 (if female)

34
Q

BMI

A

BMI (kg/m^2) = weight (kg) / height^2 (m)

BMI = weight (lb) / height^2 (in) x 703

35
Q

ideal body weight (IBW)

A

IBW (males) = 50kg + (2.3 x inches over 60)

IBW (females) = 45.5 + (2.3 x inches over 60)

36
Q

adjusted body weight (AdjBW)

A

AdjBW = IBW + 0.4(TBW - IBW)

37
Q

anion gap (AG)

A

AG = Na - Cl - HCO3

38
Q

ANC (cells/m^3)

A

ANC = WBC x [(%segs + %bands)/100]

39
Q

celcius to fahrenheit

A

C = (F-32)/1.8

40
Q

fahrenheit to celcius

A

F = (Cx1.8) + 32

41
Q

risk

A

risk = number of subjects with unfavorable event / total number of subjects

42
Q

risk reduction (RR)

A

RR = risk in treatment group / risk in control group

43
Q

relative risk reduction (RRR)

A

RRR = (% risk in control - % risk in treatment) / % risk in control

44
Q

number needed to treat (NNT)

A

NNT = 1/ ARR

45
Q

absolute risk reduction (ARR)

A

ARR = %risk in control - %risk in treatment

46
Q

rule of 500 for rapid acting insulin (carb ratio)

A

500 / total daily dose of insulin (TDD) = grams of carbs covered by 1 unit of rapid-acting insulin

47
Q

rule of 450 for regular insulin (carb ratio)

A

450 / total daily dose of insulin (TDD) = grams of carbs covered by 1 unit of regular insulin

48
Q

1,800 rule (correction factor for rapid-acting insulin)

A

1,800 / TDD = correction factor for 1 unit of rapid-acting insulin

49
Q

1,500 rule (correction factor for regular insulin)

A

1,500 / TDD = correction factor for 1 unit of regular insulin

50
Q

LDL

A

LDL = TC - HDL - (TG/5)

*do not use if TG > 400

51
Q

BSA

A

BSA = square root[(cm x kg)/3600]

52
Q

half-life

A

t1/2 = 0.693 / ke

53
Q

phenytoin correction

A

phenytoin corrected = total measured phenytoin / [(0.2x albumin) + 0.1]

NAPLEX Prep (4 decks)

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