Indirect Calorimetry

Published on 22/03/2015 by admin

Filed under Critical Care Medicine

Last modified 22/03/2015

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W21 Indirect Calorimetry

Pierre Singer, Jonathan Cohen

image Before Procedure

Indications

• A need for estimating energy expenditure (EE) in critically ill patients in whom the EE is highly variable and difficult to predict by simple equations, such as:

• Patients with liver disease
• Obese patients

Contraindications

• Absolute contraindications:

• Situations preventing complete collection of expired gases
• Leaks of gas from the ventilator circuit
• Leaks around endotracheal tubes
• Leaks through chest tubes
• Instability of delivered oxygen concentration
• Oxygen concentration above 65

• Relative contraindications:

• Ongoing hemodialysis
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