CALCULATIONS

Question 1

1 tsp is how many ml

Answer 1

5 ml

Question 2

1 tbsp is how many ml

Answer 2

15 ml

Question 3

1 cup is how many
a. oz
b. mls

Answer 3

a. 8 oz
b. 240 mL (236.56 actual)

Question 4

1 pint is how many
a. oz
b. mls

Answer 4

a. 16 oz
b. 480 (473 actual)

Question 5

1 quart is how many
a. pints
b. mls

Answer 5

a. 2 pints
b. 946.24

Question 6

1 gallon is how many
a. quarts
b. mls

Answer 6

a. 4 quarts
b. 3784.96

Question 6

1 pound is how many kg

Answer 6

2.205

Question 6

1 oz is how many g

Answer 6

28.4 g

Question 7

1 pound is how many
a. g
b. oz

Answer 7

a. 454 g
b. 16 oz

Question 8

1 grain is how many mg

Answer 8

64.8 mg

Question 9

nano to micro

Answer 9

1 mcg=1000 ng

Question 10

mg to micro

Answer 10

1 mg = 1000 mg

Question 11

g to mg

Answer 11

1 g =1000 mg

Question 12

convert % strength to ratio strength. for example.

0.04% to ratio strength

Answer 12

0.04/ 100

1/x

0.04x=100
x=100/0.04
x=2500

answer: 1:2500

Question 13

convert 1:4000 as a percentage strength

Answer 13

1 divided by 4000=0.00025

0.00025x100= 0.025%

Question 14

compound’s # of dissassociation particles

NS

Question 15

SG UNITS

Answer 15

G/ML

Question 16

amount of calories provided from carbs

Answer 16

enteral: 4 kcal/g
parenteral: Dextrose monohydrate (3.4 kcal/g
Glycerol: 4.3 kcal/g

Question 17

amount of calories provided from fat

Answer 17

enteral: 9 kcal/g
parenteral: dépends on concentration of lipid emulsion
a. injectable lipid emulsion (ILE) 10%: 1.1 kcal/mL
b. ILE (20%): intralipid, smoflipid: 2 kcal.mL
c. ILE 30%: 3kal/mL

Question 18

amount of calories provided from protein

Answer 18

enteral: 4
parenteral: 4

Question 19

equation for fluid needs

Answer 19

fluid requirement=1500+[(20mLx (weigh tin kg-20)]

Question 20

total energy expenditure equation

Answer 20

TEE=BEEx activity factor x stress factor

Question 21

nitrogen intake equation

Answer 21

nitrogen intake=g of protein/6.25

Question 22

NOTE: when calculating kcal provided from lipid

Answer 22

do not worry about %strength. automatically calculate kcal based on concentration of product being used

Question 23

corrected calcium
purpose and equation

Answer 23

calcium is bound to albumin
when albumin is low, leads to falsely low albumin levels

Ca corrwcted=(serum calcium)+[(4-albumin)x0.8)]

Question 24

drug nutrient interactions

Answer 24

many enteral products bind warfarin

other drugs.
warfarin
phenytoin
tetracyclines
ciprofloxacin

Question 25

BMI equation

Answer 25

BMI(kg/m^2)= weight(lg)/(heaight in)^2 x 703

Question 26

BMI classifications

Answer 26

<18.5 underweight
18.5-24.9: normal weight
25-29.9 overweight
>30 obese

Question 27

AdjBW=IBW+0.4djusted body weight

Answer 27

AdjBW=IBW+0.4(TBW-IBW)

Question 28

when to use TBW, IBW, OR AdjBW

Answer 28

1. Compare TBW to IBW

I. if pts TBW is < IBW: USE TBW

II. if ~normal weight (TBW~IBW or <120% of IBW) can use TBW for MOST MEDS
a. EXCEPTION: use IBW for amino-hyaline, theophylline, and acyclovir)

III. if obese (TBW>120% OF IBW)
a. use IBW for amino-hyaline, theophylline and acyclovir
b. use tBW for LWMHs, UFH, and vancomycin
c. use adjBW for ahminoglycosides

Question 29

BUN:SCR ratio notw

Answer 29

> 20:1 indicated dehydration
<20:1 true renal injury type

Question 30

what weight to use for cockcroft-gault equation

Answer 30

compare TBW to IBW

if underwirehgt: use TBW
if normal wiehght to (TBW~IBW): use IBW
if obese:
a: gif BMI<25, use IBW
b. if BMI>=25: use adjBW

Question 31

anion gap calculation

Answer 31

Na-Cl-bicarb

Question 32

ph=ph

Answer 32

half compound is ionized, 1/2 is unioned

Question 33

ph>pka

Answer 33

more of acid is ionized, more of conjugate base is unionized

Question 34

ph<pka,

Answer 34

more of acid is unionized, and more of conjugate acid is ionized

Question 35

to calculate ph of a solution. must use henderson hasselbach equation.

weak acid formula

weak base formula

Answer 35

ph=pka+log(salt/acid)
ph=pka+log (base/salt)