Nutritional Assessment Flashcards
Nutritional Screening
- Food and Nutrient Intake Patterns
- Calorie, macros, vits, minerals
- Swallowing issues, GI issues,
- Food habits, misuse of supplements
- Restricted, therapeutic diet
- Psych and Social factors
- Low literacy, language
- Depression, mental health
- Resources, income, substance abuse
- Physical Conditions
- Age extremes, pregnancy, fat/muscle wasting, organ dysfunction, AIDS, cancer
- Abnormal Lab Values: visceral proteins, lipids, BG - Medications
Characteristics of a Good Screen
Simple and quick process Uses data routinely gathered
Facilitates completion of early intervention goals
Includes data on risk factors
Cost effective
**Main goal: Determines need for nutrition assessment
Individual Assessment
Evaluate, Analyze, Plan, Implement, Evaluate and Record
Community Assessment
Focus on high risk groups
- Phases:
- Screening and assessment
- Data collection of population
- Analysis of information to identify health needs and problems
- Objectives:
- General goals determined
- Involving staff and agency decisions
- Establish time line
- Program Plan: Plan of action, staff, documentation, sources of funding, budget planning, equipment
- Evaluation: Assessment should be ongoing, evaluate results, revisions for study purposes or for conversion to regular, ongoing program status
Anthropometric - Weight
Ideal weight for height (% ideal)
Usual weight (% usual)
Actual weight
“Ideal Weight”
Met Life Insurance Tables ‘59 and ‘83
Some people think we should aim to achieve ‘59 values because we were thinner back then
Miller Method
Women: 119 lbs for 5ft + 3 lbs/in
Men: 135 lbs for 5 ft + 3lbs/in
Frame Size by Wrist Circumference
r = Height (cm) / Wrist Circumference (cm)
- Males
- r > 10.4 small
- r = 9.6-10.4 medium
- r < 9.6 large
- Females
- r > 11 small
- r = 10.1-11 medium
- r < 10.1 large
Body Compartments
Lean Body Mass = Fat Free Mass
Body fat = # and size of fat cells
Body water - LBM contains more water
Mineral Mass - smallest component
BMI
BMI = wt (kg) / ht (m)
- 2 2.54 cm/in
Not a good measure if:
- Very high in muscle mass
- Low muscle mass
- Dense/large bones
- Dehydration, overhydration
Mid-Upper-Arm Circumference (MAC)
Non-dominant arm
Midpoint between scapula and elbow
Triceps Skinfold Thickness (TSF)
Requires calipers good estimate of subcutaneous fat
Mid-Upper-Arm MUSCLE Circumference (MAMC)
Calculated using MAC and TSF to estimate body’s skeletal muscle mass
MAC(cm) - [(.314 x TSF(mm)]
Waist to Hip Ratio
Indicative of android obesity, which correlates with obesity related diseases
Healthy:
- Women < 0.8
- Men < 1.0
Bioelectrical Impedance Analysis (BIA)
- Body fat/body composition analysis
- LBM has higher electrical conductivity and low impedance, relative to water, based on electrolyte content
- Electrodes attached to extremities
- Electrical and resistance data obtained
- Highly sensitive to hydration status
Biochemical Analysis
Most objective and most sensitive data
Quality control can be maintained
Nutrition specific lab data tests on body fluids
Albumin
Normal: 3.5-5
- Most abundant and most often measured protein
- Long Half life - 21 days - can’t evaluate short term changes
- Made in liver
- Functions to maintain oncotic pressure, keeping fluids in the right places in the body
- Nonspecific carrier protein
- Inexpensive nutritional marker in a non-stressed person
Preablumin / Transthyretin
Normal: 19 - 43
- Transport protein with many physiological roles
- Correlates with short term changes in nutritional status in non-stressed person
- Short half life - 2 days
Hematocrit
Men: 41-53%
Women: 36-46%
- Percentage of RBC’s in the blood by vol
- Indicates ratio of RBC vol to total blood vol
- Low level can be indicative of anemia or blood loss