SUMMARY
High prevalence of undernutrition in spanish elders admitted to a general hospital and associated factors
The objective of the study was to evaluate the nutritional status of the hospitalised elderly patients using the Mini Nutritional Assessment (MNA) and nutritional classic parameters, to estimate the prevalence of undernutrition among them and to value the correlation of undernutrition with epidemiological characteristics of the sample for determine the highest risk's group among the malnourished patients. A cross sectional survey was done among a sample of 200 elderly patients admitted to the USP San Carlos Hospital (Murcia, Spain) during a period of 3 months. Patients answered a questionnaire including demographic data and the MNA clinical tool. Lymphocyte concentration and albumin and transferrin serum levels were also collected. Statistical analyses were performed with the Student t and chi² tests. For the MNA, the Spearman's coefficient was employed. Mean age of the 200 patients was 80.72 SD 7.43 years. Mean weight was 63.41 SD 19.57 kg and mean height was 160.93 SD 8.36 cm, with a mean Body Mass Index of 24.27 SD 7.31. The serum values of albumin and transferrin and total lymphocytes in blood were 3.09 SD 0.5 g/l, 1.69 SD 0.37 mg/dl and 1412 mm³ respectively. Average score of the MNA was 15.9 SD 6.21 and, according to this scale, 50% (n=100) of the patients were malnourished. Correlation analyses resulted in significant association (p<0.001) between values of undernutrition in the MNA and measurements under normality of the biochemical and immunological parameters. The patients who presents chronic diseases, advanced physical or mental deterioration and minor self-sufficiency are either malnourished or at high risk of being. The individualized nutritional evaluation must be performed routinely when the patient is admitted to the hospital for detect and treat early signs of malnutrition.

Key words: Undernutrition, MiniNutritional Assessment, nutritional valuation.



Recibido: 18/01/2005
Aceptado: 21/03/2005

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