Results 151 to 160 of about 777,569 (201)
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Bailliere's clinical endocrinology and metabolism, 1988
Indirect calorimetry is a method which allows the non-invasive measurement of energy expenditure and substrate utilization in humans. The procedure is described and the main equations to calculate energy expenditure and substrate utilization are presented.
E, Jéquier, J P, Felber
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Indirect calorimetry is a method which allows the non-invasive measurement of energy expenditure and substrate utilization in humans. The procedure is described and the main equations to calculate energy expenditure and substrate utilization are presented.
E, Jéquier, J P, Felber
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Indirect calorimetry in the ICU
2016Abstract Critically-ill patients have unpredictable and dynamic metabolic demands that are difficult to predict and quantify. Combined with the high incidence of pre-existing or development of malnutrition in the ICU, these metabolic demands have deleterious effects on outcomes when patients are provided with inadequate or inappropriate ...
Joseph L. Nates, Sharla K. Tajchman
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Circulatory Indirect Calorimetry in the Critically III
Journal of Parenteral and Enteral Nutrition, 1991Circulatory indirect calorimetry (CIC) is a potentially useful method to assess the energy requirements of critically ill patients. Unlike respiratory indirect calorimetry (RIC), which measures oxygen utilization from inhaled and exhaled gases, CIC measures oxygen utilization from arterial and mixed venous blood.
R R, Williams, C R, Fuenning
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The theoretical bases of indirect calorimetry: A review
Metabolism, 1988Indirect calorimetry is the method by which the type and rate of substrate utilization, and energy metabolism are estimated in vivo starting from gas exchange measurements. This technique provides unique information, is noninvasive, and can be advantageously combined with other experimental methods to investigate numerous aspects of nutrient ...
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Indirect Calorimetry: A Practical Guide for Clinicians
Nutrition in Clinical Practice, 2007This review provides clinicians with a comprehensive overview of indirect calorimetry including the principles, methodology, technologic advancements, benefits, and challenges. Clinical applications for indirect calorimetry and the potential limitations are specifically addressed for both the inpatient and outpatient setting.
Heather A, Haugen +2 more
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Indirect calorimetry in the mechanically ventilated patient
Critical Care Medicine, 1987We used indirect calorimetry to measure oxygen consumption (VO2) and carbon dioxide production in 29 mechanically ventilated patients. These data were compared to VO2 measured simultaneously by a standard thermodilution technique. A good correlation was demonstrated between the methods, but VO2 measured by indirect calorimetry was 15% higher than VO2 ...
M R, Levinson +4 more
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AACN Clinical Issues: Advanced Practice in Acute and Critical Care, 2003
Physiologic monitoring of the patient's metabolic response to illness and nutritional needs has been available for many decades. Traditional methods for estimating and intermittently assessing the patient's metabolic status provide incomplete and often misleading information. The measurement oxygen consumption (VO2) and carbon dioxide production (VCO2)
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Physiologic monitoring of the patient's metabolic response to illness and nutritional needs has been available for many decades. Traditional methods for estimating and intermittently assessing the patient's metabolic status provide incomplete and often misleading information. The measurement oxygen consumption (VO2) and carbon dioxide production (VCO2)
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Indirect Calorimetry in Chair‐Adapted Primates
Journal of Parenteral and Enteral Nutrition, 1986This paper describes the construction of an indirect calorimeter for measurement of respiratory gas exchange in the chaired primate. Preliminary determinations of energy expenditure and respiratory quotient in five animals under a variety of dietary conditions suggest that this system will prove useful in the laboratory study of primate nutrition ...
D T, Dempsey, L O, Crosby, J L, Mullen
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Indirect calorimetry as point of care testing
Clinical Nutrition, 2019Determining energy requirement is a fundamental of nutrition support. Indirect calorimetry (IC) has been long recognized as the gold standard for assessing basal or resting energy expenditure (REE). The measurement of REE is recommended particularly in the situation where adjustment of energy provision is critical.
Sornwichate, Rattanachaiwong +1 more
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Microprocessors in indirect calorimetry
Journal of Microcomputer Applications, 1984Abstract Indirect calorimetry calculates energy expenditure and respiratory quotient from oxygen consumption and carbon dioxide production. Continuous flow ventilated hood systems allow prolonged measurements to be made. The incorporation of a microprocessor enables immediate computation and graphic display during a calorimetry run, processing of ...
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