Premium
A Simple and Accurate Indirect Calorimetry System for Assessment of Resting Energy Expenditure
Author(s) -
Head C. Alvin,
Mcmanus Clifford B.,
Seitz Susan,
Grossman Gilbert D.,
Staton Gerald W.,
Heymsfield Steven B.
Publication year - 1984
Publication title -
journal of parenteral and enteral nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.935
H-Index - 98
eISSN - 1941-2444
pISSN - 0148-6071
DOI - 10.1177/014860718400800145
Subject(s) - calorimetry , enteral administration , resting energy expenditure , parenteral nutrition , medicine , energy expenditure , chemistry , intensive care medicine , physics , thermodynamics
An indirect calorimetry system was assembled from three readily available major components: a digital pneumotachograph, an oxygen analyzer, and a carbon dioxide analyzer. A one‐way valve, face mask, and meteorological balloon completed the system. Accuracy was assessed by comparison to direct calorimetry in hospitalized patients undergoing enteral hyperalimentation. Each subject was on continuous infusion of formula during a 7‐day metabolic balance. Direct and indirect calorimetry was performed over the last 4 days of the balance. The overall agreement between the two methods was within 1%. A simple and inexpensive calorimetry system can therefore be assembled to provide an accurate measure of resting energy expenditure. (Journal of Parenteral and Enteral Nutrition 8:45–48, 1984)