Journal of the American College of Nutrition, Vol 11, Issue 3 309-325, Copyright © 1992 by American College of Nutrition

JOURNAL ARTICLE

Prolonged tube feeding in long-term care: nutritional status and clinical outcomes

C. T. Henderson, L. S. Trumbore, S. Mobarhan, R. Benya and T. P. Miles
Dept. of Geriatric Medicine and Chronic Diseases, Oak Forest Hospital, IL 60452.

This study examines nutritional status and clinical outcomes, including pressure ulcers and death in 40 chronically tube-fed long-term care patients. Anthropometric, biochemical, clinical and dietary data were collected over a 3-month period, with follow-up of mortality at 1 year. Subjects' functional and cognitive status was generally poor. Adequate calories and protein were provided, with sample means exceeding standard means for energy, protein and micronutrients. Still, subjects showed weight loss and severe depletion of lean and fat body mass. Mean serum protein and micronutrient status measures were in the low normal range. Hemoglobin, hematocrit, and serum zinc and carotenoid levels were below normal in a sizable proportion of patients. Pressure ulcers were present in 65% of patients. Weight loss was associated with longer time on tube feeding and more pressure ulcers. Negative correlations with ulcer number were observed for cholesterol, albumin, zinc, retinol, alpha-tocopherol and iron. This study shows that despite administration of apparently adequate formula, micronutrient deficiencies and marasmic malnutrition exist in chronically ill patients. Causes may include the combined effects of chronic disease, sepsis, immobility, and severe neurologic deficits. Clinical outcomes may be expressions of an organism-wide diminution of protein synthesis, the cause of which is unknown. For clinical management, serial measures of weight, albumin, cholesterol, hemoglobin and hematocrit are recommended. Future research must address the many subsets of the population of chronically tube-fed patients.

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