Nutrition and Nutritional Assessment

NUTRITIONAL ASSESSMENT AND DATA COLLECTION

Nutrition Assessment Tools

• Nurses play a crucial role in assessing the nutritional needs of clients requiring both acute and chronic nutritional care.

• Assessments include determining nutrient intake and considering the family's nutritional habits.

• Incorporation of community education on nutrition is essential.

• A collaborative interprofessional approach provides optimal patient outcomes.

• Physical assessment data is collected by providers and nurses, who also liaise with registered dietitians for comprehensive assessments.

• The Joint Commission (TJC) mandates a nutrition screening within 24 hours of inpatient admission for identifying clients at risk for malnutrition.

Diet History

• Diet history assessment includes:

  • Time, type, and amount of food consumed for each meal and snacks.

  • Time and amount of fluids consumed daily, including water and beverages with caffeine.

  • Types and amounts of special foods.

  • Typical food preparation methods (fried, with sugar).

  • Number of meals eaten away from home.

  • Type of preferred or prescribed diet (e.g., ovo-lacto vegetarian).

  • Foods avoided due to allergies or preferences.

  • Medication or nutritional supplement frequency and dosage.

  • Client satisfaction with their diet over the recent timeframe (e.g., past 3 months).

Physical Manifestations of Malnutrition

• Indicators of inadequate nutrition:

  • Dry, brittle hair or dry patches of skin.

  • Poor wound healing or presence of sores.

  • Muscle wasting or lack of subcutaneous fat.

  • Irregular cardiovascular findings (heart rate, rhythm, and blood pressure).

  • Enlargement of spleen or liver.

  • Generalized weakness or impaired coordination.

Anthropometric Measurements

• Weight should be measured at the same time daily and under similar clothing conditions to ensure accuracy.

• Significant changes in weight may indicate water weight fluctuations.

• % weight change calculation:
  ext{% Weight Change} = \frac{\text{Usual Weight - Present Weight}}{\text{Usual Weight}} \times 100

Body Mass Index (BMI) Calculation

• The BMI is computed as follows:
  $BMI = \frac{\text{Weight (kg)}}{\text{Height (m)}^2}$

• Weight classifications based on BMI:

  • Underweight: BMI less than 18.5

  • Healthy weight: BMI 18.5 to 24.9

  • Overweight: BMI 25 to 29.9

  • Obesity: BMI greater than or equal to 30

• Consideration must be given for factors affecting BMI results, such as body composition and muscle mass.

Clinical Values in Nutritional Assessment

• Fluid Intake and Output (I&O) Recommendations:

  • Adults: 2,000 to 3,000 mL (2 to 3 L) per day as appropriate,

  • Total urine output average expected: 1,750 to 3,000 mL/day.

• Protein level assessments often measured through albumin levels; reference range: 3.5 to 5 g/dL.

Nitrogen Balance

• Refers to the relationship between protein catabolism and synthesis.

• Measurement:

  • $\text{Protein Intake (g)} = \text{Nitrogen Intake (g)} \times 6.25$

  • $\text{Total Nitrogen Output} = \text{Urine Urea Nitrogen (g)} + 4$

  • $\text{Nitrogen Balance} = \text{Nitrogen Intake} - \text{Total Nitrogen Output}$

• Nitrogen Balance Classifications:

  • Neutral: adequate nutritional intake

  • Positive: synthesis greater than breakdown (e.g., growth, recovery)

  • Negative: breakdown exceeds synthesis (e.g., starvation, illness).

Risk Factors Affecting Nutritional Status

• Biophysical Factors:

  • Medical diseases/conditions (e.g., hypertension, HIV/AIDS).

  • Age differences and genetic predispositions (e.g., lactose intolerance).

• Psychological Factors:

  • Mental health issues (e.g., depression, stress); can lead to avoidance of eating or overeating.

• Social Determinants of Health (SDOH):

  • Access to food sources, cultural preferences, housing stability, and education levels affect nutritional status and behaviors.

• Economic Stability:

  • Choices between affordable health foods and housing; these may contribute to undernutrition or overnutrition.

Common Risk Factors and Associated SDOH Categories

• Risk Factors:

  • No grocery store access → Neighborhood and built environment

  • Family discourages help seeking → Social and community context

  • Affordability issues with insurance → Economic stability

  • Lack of primary care access → Health care access

  • Low literacy → Education.

Nutritional Deficiencies

• Risks of deficiency diseases arise from inadequate nutrient intake.

Vitamins and Minerals

• Water-Soluble Vitamins:

  • Includes Vitamin C and all B-vitamins (thiamin, riboflavin, niacin, pyridoxine, cobalamin, folate).

  • Important for various metabolic functions, including energy production.

  • Deficiency impacts:

  • Scurvy (Vitamin C deficiency), Beriberi (Thiamin deficiency), Pellagra (Niacin deficiency).

• Fat-Soluble Vitamins:

  • Include Vitamins A, D, E, and K.

  • Store long-term in body tissues and excess intake can lead to toxicity.

Macronutrients Overview

• Carbohydrates, proteins, lipids (fats): Primary energy sources

• Water should be adequately consumed (~2.7 L for women, ~3.7 L for men).

Definitions of Nutritional Terms

• Malnutrition: Inadequate intake of nutrients resulting in adverse health effects

• Obesity: Excess body fat that negatively affects health.

• Underweight: Low weight relative to height leading to health risks.

Application Exercises

• Nurses should assess a malnourished client for common physical manifestations of nutritional deficiencies.

• Understanding client’s BMI classifies risks for health issues. Example options for overweight classification include BMI values of 25-29.9.

• Nursing actions may involve dietary teaching aimed at preventing osteoporosis, sharing nutritional source insights, and enhancing client management plans.

Ethical Considerations

• The relationship of nutritional education and capability should be approached with ethical considerations around inclusivity and specificity to individual needs, avoiding bias based on socioeconomic status or culture.