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Energy and ATP: Costs and benefits

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Metabolism and Artificial Nutrition in the Critically Ill

Part of the book series: Topics in Anaesthesia and Critical Care ((TIACC))

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Abstract

The rate of energy expenditure varies during the day, as dictated by the need to regenerate the ATP used in carrying out the body’s metabolic functions, in digesting and storing nutrients, and in moving and performing physical tasks. In the resting state, energy expenditure depends primarily on the size of the lean body mass and on the metabolic costs incurred for processing ingested nutrients. The amount of heat generated is generally sufficient to allow maintenance of body temperature by regulation of heat dissipation, because human subjects can, and generally do, take measures to maintain comfort through appropriate clothing and control of environmental temperatures. Situations where substrate oxidation is activated for the sake of heat production are thus uncommon. The indiscriminant use of the term “thermogenesis” unfortunately creates much confusion.

This publication was made possible in part by grant number DK 33214 from the National Institute of Health. Its contents are solely the responsibility of the author and do not necessarily represent the official views of the National Institute of Health.

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  1. J. P. Flatt
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Editors and Affiliations

  1. Institute of General Clinical Medicine, Cattinara Hospital, Trieste, Italy

    G. Guarnieri MD

  2. Department of Anaesthesia, Intensive Care and Pain Therapy, Cattinara Hospital, Trieste, Italy

    F. Iscra MD

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© 1999 Springer-Verlag Italia, Milano

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Flatt, J.P. (1999). Energy and ATP: Costs and benefits. In: Guarnieri, G., Iscra, F. (eds) Metabolism and Artificial Nutrition in the Critically Ill. Topics in Anaesthesia and Critical Care. Springer, Milano. https://doi.org/10.1007/978-88-470-2901-9_3

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  • DOI: https://doi.org/10.1007/978-88-470-2901-9_3

  • Publisher Name: Springer, Milano

  • Print ISBN: 978-88-470-0042-1

  • Online ISBN: 978-88-470-2901-9

  • eBook Packages: Springer Book Archive

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