Evaluation of metabolic measuring instruments for use in critically ill patients

Critical Care Medicine
K MakitaB Royston

Abstract

We evaluated three commercial indirect calorimetry devices which are used during artificial ventilation. Commercial butane, which had an RQ of 0.615, consumes 6.40 ml oxygen, and produces 3.94 ml CO2/1 ml, was burned in a gas-tight combustion chamber in conjunction with the ventilation of a lung model. During combustion, the flow rate of butane was measured with a soapfilm flowmeter for the calculation of reference values of oxygen consumption (VO2) and CO2 production (VCO2). To investigate the effect of oxygen concentration on the accuracy of these instruments, measurements were carried out at FIO2 values of 0.3, 0.4, 0.5, and 0.6 with a fixed ventilation mode (tidal volume 500 ml; respiratory rate 16 breath/min, intermittent positive-pressure ventilation). For the Datex Deltratrac Metabolic Monitor, the mean relative errors of measured VO2, VCO2, and RQ were all within 4.0%, 2.9%, and 4.0%, respectively. For the Engstrom Metabolic Computer, the corresponding values were 1.4%, 5.7%, and 6.0%, and for the SensorMedics MMC Horizon, 5.7%, 2.9%, and 5.9%.

Citations

Dec 1, 1995·Diabetes/metabolism Reviews·Y Schutz
May 15, 1998·Hepatology : Official Journal of the American Association for the Study of Liver Diseases·T S WalshA Lee
Jan 1, 1994·Intensive Care Medicine·W WeylandU Braun
Jul 1, 1992·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·C CruiseP Houston
Jan 1, 1994·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·L Lind
Jun 2, 2007·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·Abraham RosenbaumPeter H Breen
Jul 1, 1994·Disease-a-month : DM·R M Leach, D F Treacher
Apr 1, 1996·Annals of Surgery·J J KelemenB A Pruitt
Apr 1, 1995·Critical Care Medicine·A UusaroJ Takala
Dec 31, 2009·Current Opinion in Clinical Nutrition and Metabolic Care·Ava M Port, Caroline Apovian
Apr 1, 1992·Anaesthesia·A N ThomasB J Pollard
Jan 1, 1996·Anaesthesia·T Walsh, P Hopton
Apr 1, 1996·Intensive Care Medicine·J F Nunn
Jul 1, 1994·Intensive Care Medicine·H M Oudemans-van Straaten, G J Scheffer
Aug 1, 1996·Intensive Care Medicine·H M Oudemans-van StraatenC P Stoutenbeek
Mar 3, 2007·Journal of Clinical Monitoring and Computing·Abraham RosenbaumPeter H Breen
Dec 1, 1994·Journal of Cardiothoracic and Vascular Anesthesia·K PuhakkaK Peltola
Oct 1, 1994·The Journal of Pediatrics·C L MarcusG M Loughlin
Jun 12, 2002·Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition·C-H ChengY-C Huang
Mar 9, 2002·Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition·J A MelendezS Miodownik
Feb 4, 2014·Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition·Séverine GrafLaurence Genton
May 31, 2003·The Australian Journal of Physiotherapy·Susan Berney, Linda Denehy
Jan 5, 2007·JPEN. Journal of Parenteral and Enteral Nutrition·Joan Maria RaurichXavier Homar

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