Indirect calorimetry.
Indirect calorimetry can be a useful tool to define nutritional status, determine nutritional requirements, and assess response to nutritional interventions. Measurements of oxygen consumption and carbon dioxide production may be used to determine cardiac output and work of breathing, and estimate the components of minute ventilation. An understanding of the potential technical and physiological pitfalls is necessary to obtain meaningful and useful information.
McArthur
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Pulmonary Function Laboratory, Hennepin County Medical Center, Minneapolis, Minnesota, USA.
D000136:Acid-Base Equilibrium / Q000502:physiology; D000328:Adult; D000368:Aged; D002153:Calorimetry, Indirect / Q000295:instrumentation; D002245:Carbon Dioxide / Q000502:physiology; D002302:Cardiac Output / Q000502:physiology; D002149:Energy Intake / Q000502:physiology; D004734:Energy Metabolism / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000502:physiology*; D010289:Parenteral Nutrition, Total; D012016:Reference Values; D012121:Respiration, Artificial
D002245:Carbon Dioxide; D010100:Oxygen