Am. J. Respir. Crit. Care Med., Volume 156, Number 3, September 1997, 794-799

Impact of Nutritional Support on Functional Status During an Acute Exacerbation of Chronic Obstructive Pulmonary Disease

HELGA SAUDNY-UNTERBERGER, JAMES G. MARTIN, and KATHERINE GRAY-DONALD

School of Dietetics and Human Nutrition, McGill University and the Montreal Chest Research Institute, Montreal, Quebec, Canada

The impact of oral nutritional supplementation during an acute exacerbation of COPD on functional status was assessed through measuring change in lung function, strength testing, and general well-being. Subjects hospitalized for an acute exacerbation of COPD (n = 33) were randomized to extra nutritional support or the regular hospital care. They consumed an additional 10 kcal/kg/d. Outcome measures were measured at 2 wk as change scores. Forced vital capacity (% predicted) improved in the treatment group as compared with the control group (+8.7% versus 3.5%, p = 0.015), and change in FEV₁ was in the same direction but not significantly different (p = 0.099). There were no changes in handgrip strength or respiratory muscle strength, but there was a trend towards more improvement in the general well-being score (+11.96 versus 10.25, p = 0.066). Almost all subjects were in negative nitrogen balance, indicating muscle wasting. The degree of muscle wasting was strongly correlated with the dose of corticosteroids (r = 0.73, p < 0.005). In conclusion, it is difficult to prevent important muscle wasting in patients with COPD treated with corticosteroids, but some small gains were observed with increased dietary intake. Saudny-Unterberger H, Martin JG, Gray-Donald K. Impact of nutritional support on functional status during an acute exacerbation of chronic obstructive pulmonary disease.

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