Nutritional Assessment: is the analysis of anthropometric, biochemical, clinical and dietary data to determine the nutritional status of a person or groups.
Purpose of Nutrition Assessment: - To assess the nutritional status. - To determine the body needs from nutrition.
- To identify the health problems that associated with nutrition status. - Identifying individuals who are malnourished or at nutritional risk.
Nutritional Assessment contents of the following:- a- D ietary h istory b- Physical examination c- Laboratory investigation
a- Dietary History and Intake - Appetite and intake - Taste changes - Dentition - Dysphagia
- Body Mass Index = BMI: Evaluation of body weight independent of height BMI = weight (kg)/height2 (m) - Underweight = <18.5 - Normal weight = 18.5–24.9 - Overweight = 25–29.9 - Obesity = BMI of 30 or greater
- Upper arm measurement - Skin fold - Fat folds and various body circumferences and areas
2) Clinical Examination: Clinical signs - blue half circles beneath eyes - Edema - Lesions at corner of mouth
- Poorly shaped bones or teeth, or delayed appearance of teeth in children - Slow clotting time of blood - Unusual nervousness, dermatitis, diarrhea in same client - Tetany - Goiter
c- Laboratory investigation
Common Biochemical Tests: - Serum albumin level: Measures main protein in blood - Hemoglobin ( Hgb ) - Red blood cells (RBCs) - White blood cells (WBCs)
1) Albumin - Normal value 3.5-5.0 g/DL - Most widely used indicator of nutritional status - Affected by volume: Increases with dehydration, decreases with edema and over hydration
2) Prealbumin - Normal value: 18-40 mg/DL - Levels affected by trauma, acute infections, liver and kidney disease; highly sensitive to minor stress and inflammation
3) Hemoglobin Normal levels are: - Men: 13.8 to 18.0 g/ dL - Women: 12.1 to 15.1 g/ dL ) - Children: 11 to 16 g/ dL - Pregnant women: 11 to 14 g/ dL - Dehydration or hyper hydration influence hemoglobin levels
Comparison between people of good nutrition and malnutrition:- Example: Good Nutrition = A Mal Nutrition = B A = Correct weight for height and age B = Weight too much or too little
A = Strong Muscles. B = Weak muscles. A = Limbs straight. B = Weak limbs.
A = Smooth mucous membranes , clear skin B = Skin dry and rough mucous membranes A = Healthy bright eyes and clear sight (Visual) B = Eyes dull, night blindness poor Sight or loss of sight.
A= Hearing good. B = Poor hearing. A = Breathing unobstructed. B = Mouth breathing. A = Teeth well formed, and free from dental caries B = Irregular teeth, dental caries; spongy gums.
A = Tonsil clean and small Tonsils B = Enlarged tonsil and often sore. A = Straight posture in sitting, standing and walking. B = Round shouldered, twisted spine and protruding abdomen.
A = Nerves steady; expression calm and cheerful, quick to learn B = Nervous, anxious, irritable and slow to learn.
A = Plenty of energy B = Tired and lethargic. A = Good resistance to infections B = Poor resistance to infections.