O2 consumption by the fick method. Methodologic factors.

Détails

ID Serval
serval:BIB_EFAF096969AC
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
O2 consumption by the fick method. Methodologic factors.
Périodique
American Journal of Respiratory and Critical Care Medicine
Auteur(s)
Chioléro R., Mavrocordatos P., Bracco D., Schutz Y., Cayeux C., Revelly J.P.
ISSN
1073-449X (Print)
ISSN-L
1073-449X
Statut éditorial
Publié
Date de publication
1994
Volume
149
Numéro
5
Pages
1118-1122
Langue
anglais
Résumé
This study aimed to compare O2 consumption (VO2) determination by the gas-exchange (VO2GE) and Fick (VO2F) methods in cardiac surgical patients. A total of 10 mechanically ventilated postoperative patients were studied prospectively. Thermodilution was performed using three randomly applied techniques: room temperature saline injected at end expiration, room temperature saline randomly injected in the respiratory cycle, and iced saline injected at end expiration. The influence of the number of thermodilution determinations was assessed by comparing results from 2 and 10 injections. The variability of VO2F was greater than that of VO2GE. There was no bias between VO2GE and VO2F values using injectate at room temperature. Accuracy and precision were not improved by increasing the number of cardiac output determinations from 2 to 10. A significant bias was observed using ice-cold injectate, VO2F being 18.0 +/- 15.4 ml/min/m2 lower than VO2GE (p = 0.001). Published results when comparing VO2F and VO2GE are discrepant. However, a significant bias was found in all studies using cold injectate, with lower VO2F values. We conclude that iced injectate should not be used to assess VO2 in critically ill patients.
Mots-clé
Adult, Aged, Calorimetry, Indirect, Cardiac Output, Coronary Artery Bypass, Critical Illness, Female, Humans, Male, Methods, Middle Aged, Oxygen Consumption, Postoperative Care, Prospective Studies, Pulmonary Gas Exchange, Respiration, Artificial, Thermodilution
Pubmed
Web of science
Création de la notice
21/01/2008 14:07
Dernière modification de la notice
03/03/2018 22:35
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