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. 1996 Mar;89(3):144–148. doi: 10.1177/014107689608900308

Three simple methods of detecting malnutrition on medical wards.

J M Nightingale 1, N Walsh 1, M E Bullock 1, A C Wicks 1
PMCID: PMC1295698  PMID: 8683518

Abstract

Malnutrition in hospital is often unrecognized. A nutrition team aims to teach simple methods of detecting malnutrition. On a single day all medical in-patients underwent a nutritional assessment. Eighty-four patients (43 men), median age 71 years (range 28-97), were assessed. The most common diagnoses were cardiac disease (26), stroke/dementia (12), non-malignant lung disease (9) and malignancy (6). A weight loss of more than 10% (%WL) was found in 17/65 (26%) and a body mass index (BMI) of less than 19 kg/m2 in 13/69 (19%). A mid-arm muscle circumference (MAMC) less than the fifth percentile occurred in 16/83 (19%) patients. Percentage weight loss alone detected seven patients of whom four were overweight (BMI > 25 kg/m2), BMI alone detected three patients, and MAMC alone eight patients of whom three could not be weighed and three had fluid retention. There was fluid retention in 35/84 (42%) patients of whom nine were malnourished (six detected by BMI and/or %WL, and three by MAMC alone). All three measurements were made in 64 patients, six (9%) of whom were detected as malnourished by all three methods. Combining the three measurements 29/84 (35%) of patients were malnourished and only 28% of these patients had been assessed by a dietitian. BMI and %WL detect most patients but fluid retention may limit their accuracy. MAMC is useful in those who cannot be weighed or who have fluid retention.

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Selected References

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