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Journal of Parenteral and Enteral Nutrition
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Measurement of Resting Energy Expenditure in Patients With Chronic Obstructive Pulmonary Disease in a Clinical Setting

A.M.W.J. Schols, PHD

Departments of Pulmonary Diseases and Human Biology, Uniuersity of Limburg, Maastricht, The Netherlands

P.F.M. Schoffelen

Departments of Pulmonary Diseases and Human Biology, Uniuersity of Limburg, Maastricht, The Netherlands

H. Ceulemans, MSc

Departments of Pulmonary Diseases and Human Biology, Uniuersity of Limburg, Maastricht, The Netherlands

E.F.M. Wouters, MD, PHD

Departments of Pulmonary Diseases and Human Biology, Uniuersity of Limburg, Maastricht, The Netherlands

W.H.M. Saris, MD, PHD

Departments of Pulmonary Diseases and Human Biology, Uniuersity of Limburg, Maastricht, The Netherlands

There is a growing tendency to estimate energy requirements by means of the assessment of resting energy expenditure (REE) by indirect calorimetry. In this study a computerized open-circuit ventilated hood system is described that was constructed for assessing REE in a clinical setting. Measurement error of the device, tested by ethanol combustion was +2% for VO2 and VCO2 and <1% for respiratory quotient. To assess the within-patient variability of REE measurements performed in a daily clinical routine, we studied the following aspects of the measurements in several groups of patients with chronic obstructive pulmonary disease: (1) reproducibility, (2) the influence of routine physical activities before the measurement, (3) measurement duration, and (4) difference between measurements using a ventilated hood or a mouthpiece. Reproducibility of measurements with a 2-month interval in 12 weight-stable patients was good (1415 ± 128 and 1398 ± 138 kcal/day). Variations due to limited activities and different measurement durations (between 10 and 30 minutes) were not significant. Variations between measurements with a mouthpiece and ventilated hood were larger in patients than in healthy control subjects, but for both groups no systematic difference was established. REE can be assessed reliably by short-term measurements with a ventilated hood in stable chronic obstructive pulmonary disease patients on an outpatient basis, provided a short rest is taken before the measurement. (Journal of Parenteral and Enteral Nutrition 16:364-368, 1992)

Journal of Parenteral and Enteral Nutrition, Vol. 16, No. 4, 364-368 (1992)
DOI: 10.1177/0148607192016004364
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