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  • Title: Comparison of three methods of determining oxygen consumption and resting energy expenditure.
    Author: Walsh BJ, Morley TF.
    Journal: J Am Osteopath Assoc; 1989 Jan; 89(1):43-6. PubMed ID: 2921120.
    Abstract:
    Resting energy expenditure (REE) in intensive care unit patients was evaluated by three methods--indirect calorimetry (REE-IC), Fick equation (REE-F), and estimation from the Harris-Benedict equation (REE-HB). The mean REE-IC and REE-F values did not differ significantly. However, both values were significantly higher than the REE-HB. The present study indicates that a reasonably accurate estimate of the REE can be obtained from data available by Swan-Ganz catheterization. The Fick method is technically simpler to perform and less expensive than indirect calorimetry. The invasive nature of Swan-Ganz catheterization is a major disadvantage. However, right-sided heart catheterization frequently is required for the management of intensive care unit patients. For them, REE-F appears to be a reasonable alternative.
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