Lecture 3 - Index, Indicators,Refernce Data, Growth Charts

Question 1

What does the waist to hip ratio measure?

Answer 1

Evaluates distribution of fat (subcutaneous and intra abdominal, an muscle tissue)
–Measure around the max circumference of the butt

Question 2

What is the BMI calculation?

Answer 2

kg/m^2

Question 3

What are the BMI categories?

Answer 3

Greateer than 40 - obesity class III
35-39.9 - Obesity class II
30-34.9 - Obseity Class 1
25-29.9 - Overweight
18.5-24.9 - Normal
Less than 18.5 - underweight
17-18.4 - Mild underweight
16-16.9 - moderate underweight
Less than 16 - severe underweight

Question 4

what does the J curve tell us?

Answer 4

In the middle is the preferred area for optimal health

-on either extreme is good or bad

Question 5

What are the ways to determines IBW?

Answer 5

Hamwi method
BMI formula
NHANES
Referring to Wt history

Question 6

What is a quick way to determine IBW?

Answer 6

Ht in cm - 105 = BW in kgs (lower

Ht in cm-100 = BW in kg (highest end)

Question 7

What is the Hamwi method?

Answer 7

Gives rough estimate of IBW

• doesn’t account for differences in age and race
• has base Wt in kgs
• add 1.1/0.9 kgs per cm over 150

-add 10% for large frame or sub 10% for smaller frame

Question 8

How do you calculate IBW using BMI formula?

Answer 8

BMI= IBWkg (to determine)/ Height^2 (m) (known)

Question 9

Why is the %UBA used?

Answer 9

Useful for assessment of nutritional risk and degree of malnutrition in adults that aren pregnant
-%UBW= (CBW/UBW)x100

Question 10

What are the ranges for %UBW?

Answer 10

85-95%UBW–> may indicate mild malnutrition

75-84%UBW–> may indicate moderate malnutrition

<74%UBW–> may indicate severe malnutrition

48-55%UBW–> necessary for survival

Question 11

Why do we use %Wtight change?

Answer 11

Useful for assessment of nutritional risk and guess of malnutrition

• need the timespan to determine if it is significant or not
• Just because something is significant doesnt mean its a bad thing

((UBW-CBW)/UBW)x100

Question 12

What is the significant weight loss when looking at % weight change?

Answer 12

1-2% in 7 days
5% in 1 month
7.5% in 3 months
10% in 6 months
10-20% in unlimited time

-anything over these values is severe

Question 13

What is the %IBW?

Answer 13

(CBW/IBW)x100
Change usually reflects something in their life that has changed

>200--> morbid obesity
130-199--> Obese
110-129--> over weight
80-90--> mild malnutrition
70-79--> Moderate malnitrition
<69--> severe malnutrition

Question 14

What is the ratio that would increase risk of borbidiity and mortality when looking at wait to hip ratio?

Answer 14

> 1,0 in men or >0.8 in women

Europids:
->94cm in men
-> 80c, in women
increases risk of chronic disease

Question 15

what are the ethnic specific values for waist circumference?

Answer 15

North American >100,>88
EEuropids, African, E. Mediterranean, arab >94, >80
Asian, Chinese, S&C American >90, >80
Japanese >90, >85

Question 16

what are the types of growth charts?

Answer 16

Percentile, based on sex and age

CDC-american breastfed children uptimes to 2T

WHO babies worldwide breastfed to 2T

Fenton Preterm growth chart

• for premies
• mimics growth in utero

Question 17

What do we look at for growth charts for birth-24 months in length in recumbent position?

Answer 17

Wt for age
Length for age
Wt for length
Head circumference

Question 18

What do we look at in growth charts for 2T-20 years?

Answer 18

Stature for age
Wt for age 
BMI for age
-dont use raw BMI cause the height is drastically changing in this age range 
Wt for stature

Question 19

What is the interpretation fo the BMI for age j-shape curve?

Answer 19

<3rd% - underweight or wasting due to recent malnutrition dehydration or genetics

> /= 85th% and <97th% - overweight

> /=97th% - obesity

Question 20

What happens when lines on charts decreases?

Answer 20

Unexpected crossing of >/=2%tike lines downward is reflective of FTT or froth failure