Lecture # 4 Anthropometrics Flashcards Preview

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Flashcards in Lecture # 4 Anthropometrics Deck (23):
1

What are two well-validated indicators of malnutrition?

Weight-loss and underweight status

2

Limitations of anthropometric measurements

really sick patients can become malnourished before anthropometric measurements reflect that; edema and fluid changes can alter measurements; extent and rate of change must be assessed; other history must be included

3

Why is height/length an important anthropometric measurement?

Assess appropriate weight in adults (assess malnutrition); Assess appropriate growth in children (malnutrition)

4

What is the most accurate tool one can use to measure the height of patient?

Stadiometer

5

What are some accurate ways one can estimate the height of a patient?

ARK (Arm Span, Recumbent length, and Knee height)

6

Recumbent Length

measuring the length of a patient from the top of the head to the bottom of the feet in a level (supine) position; bed length tends to be greater than standing height by approx. 1 inch

7

Why would a clinician use a knee height measurement?

recumbent length difficult to obtain. not significantly affected by the aging process; can also estimate weight utilizing knee height and arm circumference.

8

How is a knee height measurement performed?

Use left leg; knee and ankle positioned at 90; most accurate when taken in the recumbent postion

9

Inch to centimeter

1 inch = 2.54 cm

10

What are the ideal methods for measuring frame size?

Wrist circumferences and elbow breadth

11

Wrist circumference formula

r = height (cm)/wrist circumference (cm)

12

Standard r values small (w/m)

r > 10.9 ; r > 10.4

13

standard r value medium (w/m)

r = 10.9-9.9 ; r = 10.4-9.6

14

Standard r value large (w/m)

r

15

How are frame sizes used in clinical practice?

They are used in research if the research needs such data, or it is used in the clinical setting if it is apparent the patient has an odd frame.

16

Hamwi method

Method used to determine the DBW (Desirable body weight) for a patient at a specific height

17

Hamwi method equation (Men)

106 lbs for 5ft and 6 lbs per inch over 5ft and minus 6 lbs per inch under 5ft

18

Hamwi method equation (women)

100 lbs for 5ft plus or minus 5 lbs for an inch over or under respectfully.

19

Large/small frame accommodation for Hamwi method

add or subtract 10%

20

BMI calculation

Weight (kg)/Height (m) squared or short-cut weight (lbs) X 703 /height in inches

21

What are the two biggest predictors of malnutrition?

weight loss and underweight status

22

What BMI value for those over the age of 65 indicate a nutritional risk?

BMI

23

BMI for 2-20 year olds

1) Use CDC growth charts 2) age and gender specific 3) used for screening and not diagnosis of underweight or overweight.

Decks in NUTR 450 Medical Nutrition Therapy I Class (36):