NAPLEX Formulas

Question 1

tsp (t) = ____ mL

Answer 1

5

Question 2

tbsp (T) = ____ mL

Answer 2

15

Question 3

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

Answer 3

30; 29.57

Question 4

1 cup = ____ oz

Answer 4

8

Question 5

1 pint = ____ oz

Answer 5

16

Question 6

1 quart = ____ pints

Answer 6

2

Question 7

1 gallon = ____ quarts

Answer 7

4

Question 8

1 kg = ____ pounds (lbs)

Answer 8

2.2

Question 9

1 oz = ____ grams (g)

Answer 9

28.4

Question 10

1 lb = ____ g

Answer 10

454

Question 11

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

Answer 11

65; 64.8

Question 12

mEq to mmol is ___:___ for monovalent ions

Answer 12

1:1

Question 13

mEq to mmol is ___:___ for divalent ions

Answer 13

1 : 0.5

Question 14

1 inch (in) = ____ centimeters (cm)

Answer 14

2.54

Question 15

1 meter (m) = ____ cm

Answer 15

100

Question 16

% w/v

Answer 16

X g / 100 mL

Question 17

% w/w

Answer 17

X g / 100 g

Question 18

% v/v

Answer 18

X mL / 100 mL

Question 19

Percentage strength

Answer 19

100 / Ratio strength

Question 20

Ratio strength

Answer 20

100 / Percentage strength

Question 21

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

Answer 21

left

Question 22

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

Answer 22

4

Question 23

Specific Gravity (SG)

Answer 23

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

Question 24

Alligation

Answer 24

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

Question 25

mOsmol/L

Answer 25

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

Question 26

Isotonicity (E value)

Answer 26

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

Question 27

mols

Answer 27

g / MW

Question 28

mmols

Answer 28

mg / MW

Question 29

mEq

Answer 29

(mg x valence) / MW or mmols x valence

Question 30

Corrected Calcium for Albumin < 3.5

Answer 30

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

Question 31

Dextrose Monohydrate = ____ kcal / gram

Answer 31

3.4

Question 32

Amino Acid Solutions = ____ kcal / gram

Answer 32

4

Question 33

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

Answer 33

1.1

Question 34

ILE 20% = ____ kcal / mL

Answer 34

2

Question 35

ILE 30% = ____ kcal / mL

Answer 35

3

Question 36

Determining fluid needs when weight > 20kg

Answer 36

1,500 mL + (20 mL)(Weight in kg - 20) *can estimate using 30-40mL/kg/day

Question 37

Enteral carbs, protein = ____ kcal/gram

Answer 37

4

Question 38

Enteral fat = ____ kcal/gram

Answer 38

9

Question 39

Total Energy Expenditure (TEE)

Answer 39

BEE x activity factor x stress factor

Question 40

Nitrogen (g) from protein

Answer 40

protein intake (g) / 6.25

Question 41

Cockcroft-Gault Equation

Answer 41

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

Question 42

Body Mass Index (kg/m²) formula

Answer 42

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

Question 43

IBW (males)

Answer 43

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

Question 44

IBW (females)

Answer 44

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

Question 45

AdjBW

Answer 45

IBW + 0.4 (TBW - IBW)

Question 46

Which body weight do you use for underweight patients

Answer 46

Total body weight (TBW)

Question 47

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

Answer 47

ideal body weight

Question 48

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

Answer 48

AdjBW

Question 49

Acidosis pH < ______

Answer 49

7.35

Question 50

Alkalosis pH < _______

Answer 50

7.45

Question 51

Respiratory alkalosis pCO2 < ______

Answer 51

35

Question 52

Respiratory acidosis pCO2 > ______

Answer 52

45

Question 53

Metabolic alkalosis HCO3 > ______

Answer 53

26

Question 54

Metabolic acidosis HCO3 < _______

Answer 54

22

Question 55

1 cup = ___ mL

Answer 55

240 (approx.)

Question 56

1 pint = ___ mL

Answer 56

480 (approx.)

Question 57

1 quart = ___mL

Answer 57

960 (approx.)

Question 58

1 gal = ___ mL

Answer 58

3850 (approx.)

Question 59

Dehydration

Answer 59

BUN:SCr > 20:1 Pt is dehydrated!

Question 60

Anion gap (AG)

Answer 60

Na - Cl - HCO3

Question 61

Weak acid =

Answer 61

pH = pKa + log[salt/acid]

Question 62

Weak base =

Answer 62

pH = pKa + log[base/salt]

Question 63

Weak acid % ionization =

Answer 63

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

Question 64

Weak base % ionization =

Answer 64

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

Question 65

Absolute neutrophil count (ANC) =

Answer 65

WBC [ (%segs + % bands)/100] Cells/mm^3

Question 66

Fahrenheit to Celsius 

Answer 66

Cel it’s = (degree F - 32)/1.8

Question 67

Celsius to Fahrenheit

Answer 67

F = (C x 1.8) +32

Question 68

Time to burn (TTB)=

Answer 68

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

Question 69

LDL =

Answer 69

TC - HDL - TG*/5 * do not use if TG > 400

Question 70

Minimum weighable quantity (MWQ)

Answer 70

Sensitivity requirement/acceptable error (usually 0.05) Sensitivity requirement is usually 6mg

Question 71

BSA =

Answer 71

Square root[Ht(cm) x Wt(kg) / 3600] Units = m^2

Question 72

MAP

Answer 72

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

Question 73

Total phenytoin correction for albumin <3.5

Answer 73

Total phenytoin measured/(0.2 X albumin) +0.1

Question 74

1L = ___ dL

Answer 74

10 So move 1 decimal to right if L to dL