Cited by 111Clinical Nutrition and GastroenterologyBiomedical and Chemical ResearchBody Composition Measurement Techniques

The Measurement of Energy Expenditure

Branson, Richard D., Johannigman, Jay A.·2004·Nutrition in Clinical Practice

Abstract

Proper nutrition support depends upon the clinician's ability to estimate the patient's energy expenditure. The accuracy of estimation is inversely proportional to the severity of the patient's illness. This fact has spurred academic and industry groups to pursue the measurement of energy expenditure. Harris and Benedict used indirect calorimetry to develop their now-famous equation nearly 100 years ago. The concept of indirect calorimetry is simple; if you know the concentration of inspired gases and expired gases, along with the flow, you can determine the amount of a gas consumed or produced. The complexity and expense of indirect calorimeters suggest that this simple concept is technically challenging. Because we desire to know the energy expenditure of the most critically ill patients, indirect calorimetry is further confounded by the presence of oxygen and mechanical ventilation. This paper will discuss the myriad of variables and obstacles that complicate the measurement of energy expenditure and will suggest methods to avoid or overcome them.

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Crossref · 10.1177/0115426504019006622

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  • Energy requirements in polymorbid medical inpatients can be estimated using indirect calorimetry, a published prediction equation or a weight-based formula, although the accuracy of prediction equations in this population is low.

    “Energy requirements in polymorbid medical inpatients can be estimated using indirect calorimetry (IC), a published prediction equation or a weight-based formula, although the accuracy of prediction equations in this population is low.”

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Authors
Branson, R. D., & Johannigman, J. A.
Affiliations
University of Cincinnati (US)
Corresponding author
Branson, Richard D.
Venue
Nutrition in Clinical Practice
Publisher
Wiley
Published
2004-12
Volume
19
Issue
6
Pages
622-636
ISSN
  • 0884-5336 (ISSN-L)
  • 1941-2452
OpenAlex
W2033421301
Cited by
111
References
56
Citations by year
2026: 4 · 2025: 2 · 2024: 3 · 2023: 13 · 2022: 4 · 2021: 5 · 2020: 7 · 2019: 8 · 2018: 6 · 2017: 9 · 2016: 5 · 2015: 6 · 2014: 2 · 2013: 7 · 2012: 3
FWCI
2.43
Type
journal article
Language
en
Open access
closed
Locations
  • Nutrition in Clinical Practice (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Clinical Nutrition and Gastroenterology
  • Health Sciences › Medicine › Surgery › Biomedical and Chemical Research
  • Health Sciences › Medicine › Physiology › Body Composition Measurement Techniques
Keywords
energy expenditure, indirect calorimetry, Harris-Benedict equation, critically ill patients, mechanical ventilation, oxygen consumption, nutritional support

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