Calculations

Question 1

IBW

Answer 1

Male= 50kg + 2.3kg for each inch over 5 feet

Female=45.5kg + 2.3kg for each inch over 5 feet

Question 2

Centimeters in 1 inch

Answer 2

2.54 cm

Question 3

TPN

Answer 3

Dextrose = 3.4 cal/g

Amino Acids = 4 kcal/g

Lipids = 10% = 1.1 kcal/g
= 20% = 2.0 kcal/g
= 30% = 3.0 kcal/g

Question 4

Nitrogen Balance

Answer 4

grams protein / 6.25 = Nitrogen

Question 5

Ketogenic diet ratio

Answer 5

4:1 Fat:Carbohydrate

Question 6

Continuous TF

Answer 6

(mL/hr of feeding) x (hrs of feeding each day)

Question 7

Bolus TF

Answer 7

(# of feedings / 24hr) x (#mL in each bolus feed)

Question 8

Free water TF

Answer 8

Bolus:
(mL free water per feeding) x (number of feedings provided)

Continuous:
(total volume TF) x (mL free water/1000)

Question 9

Kcal Needs - Hamwi Method

Answer 9

IBW x amount exercise

Inactive x 11
(2-3 times/week x 13)
(4-5 times/week x 15)
(6-7 times/week x 18)

Question 10

ABW

Answer 10

IBW + 0.4(actual weight - IBW)

Used for obesity

Question 11

ABW Aputees

Answer 11

Percentage total body weight from each contributing body part:

Leg and foot: 18.5%
Above the knee: 13%
Below the knee: 6.0%
Foot: 1.8%
Arm and hand: 6.5%
Forearm and hand: 3.0%
Hand 1.0%

Question 12

ABW disability

Answer 12

Paraplegia: subtract 5-10% from IBW

Quadriplegia: subtract 10-15% from IBW

Question 13

Calcium correction with albumin

Answer 13

1 g/dL reduction albumin = 0.8 mg/dL calcium

Corrected Ca = 0.025 x (40 - g/dL albumin)