Subjective Global Assessment: Evaluating Nutritional Status

Subjective Global Assessment

An alternative assessment of nutritional status without using objective methods.
Based on the medical history and physical examination of the patient, it has been validated against objective assessment methods.
  • A) Anthropometry
  • B) Biochemical data
  • C) Physical examination
  • D) Dietary assessment
A) Medical History
  • Changes in weight and height
  • Changes in food intake
  • Gastrointestinal symptoms > 2 weeks
  • Functional capacity
  • Disease and its relation to nutritional needs
B) Physical
Comments on fat, muscle, edema, ascites, mucosal lesions, and skin changes.
  • The final result depends entirely on the observer’s interpretation.
  • The main limitations are that it does not have an anthropometric and may not be so attached to the reality of a full evaluation.
Has a physical examination and medical history.

The Physical Examination Should Consider:

  • Loss of subcutaneous fat
  • Muscle mass
  • Skin lesions
  • Clinical signs of nutrient deficiency and edema

The Clinical History Should Consider:

  • Weight change
  • Intake
  • Gastrointestinal symptoms persisting for more than 2 weeks, such as nausea, vomiting, diarrhea, etc.
  • Functional impairment

Subjective Global Assessment Classifies Patients In:

  • A) Well-nourished
  • B) Mild or moderate malnutrition
  • C) Severely malnourished
It depends on the observer’s interpretation
  • Advantages: Effective, low cost.
  • Disadvantages: Depends on the observer. There are no anthropometric or biochemical assessments. It takes a trained evaluator.
Examine the Reserves of Fat and Muscle:
  • Around the eye socket is a good deposit of fat
  • In well-nourished individuals, fat deposits appear as slight bulges
  • In individuals with DN, there is depression in the eye or obscured under-eye area.
Muscular Sign
  • A depression in the temple is a characteristic sign of muscle loss in malnourished patients.
  • In well-nourished people, the muscle that goes from the eye socket to the temple is visible along it.
  • If the area has a sleek look, without sinking, without loss of muscle mass, it is classified as well-nourished.
  • If depression also can be called “flowerpots wear.”
  • Another good deposit of fat is the arm.
  • Determining the amount of fat in the biceps and triceps can help define the nutritional status of the patient.
  • If the patient has lost in almost all areas, they are classified as severely malnourished.
  • If the patient presents only fat loss and muscle in some areas, they are classified as mild or moderate malnutrition.
  • If no deterioration in any area, the individual is classified as well-nourished.
  • In malnourished individuals, the fingertips are almost united by the absence of fatty tissue.
  • In the individual, the fingertips are separated to make the fold

Clinical assessment: Intake, weight changes, gastrointestinal symptoms, and functional impairment.

The clinical evaluation is determined by classifying patients by the severity of symptoms, presenting the more severe the symptom is present to be classified with a > risk of DN.
To Determine Dietary Intake Using the Following Criteria:
  • The more important is the reduction in food intake or appetite, the more time will be more severe classification.
  • Were classified as mild to moderate malnutrition if significant.
  • Severe malnutrition if the intake is almost nil.
  • If the patient eats well and no weight change was classified as well-nourished.
Changes in Weight Were Clarified as Follows:
  • If weight loss is classified as mild to moderate.
  • If weight loss is severe, to be classified as severely malnourished.

Time

Mild to Moderate

Severe

1 week

99-98%

1 month

95%

3 months

92.5%

6 months

90%

Functional Impairment
  • It is classified as force or energy lost by the DN.
  • Difficulty performing tasks such as walking and getting up shows a risk of malnutrition.
  • Should not be confused alterations caused by the disease, amputation, impairment in arthritic joints in the malnourished.
Interpretation of EGS
  • DN severe classification is given to patients who have had a fat loss and muscle importantly, a continuous loss of weight, lost 10% of total weight in 6 months or a significant intake restriction.
  • The classification of mild or moderate DN is given to patients with loss of 5-10% of total weight in 6 months, with slight loss of fat and muscle and a reduction in mild or moderate intake may or may not have symptoms.
If there are no symptoms, functional impairment, weight loss, were classified as well-nourished.