Calibration of seven ICU ventilators for mechanical ventilation with helium-oxygen mixtures.

Détails

ID Serval
serval:BIB_F55A82F0C145
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Calibration of seven ICU ventilators for mechanical ventilation with helium-oxygen mixtures.
Périodique
American Journal of Respiratory and Critical Care Medicine
Auteur⸱e⸱s
Tassaux D., Jolliet P., Thouret J.M., Roeseler J., Dorne R., Chevrolet J.C.
ISSN
1073-449X (Print)
ISSN-L
1073-449X
Statut éditorial
Publié
Date de publication
1999
Peer-reviewed
Oui
Volume
160
Numéro
1
Pages
22-32
Langue
anglais
Notes
Publication types: Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Résumé
The study evaluated seven intensive care unit (ICU) ventilators (Veolar FT, Galileo, Evita 2, Evita 4, Servo 900C, Servo 300, Nellcor Puritan Bennett 7200 Series) with helium-oxygen (HeO2), using a lung model, to develop correction factors for the safe use of HeO2. A 70:28 helium-O2 mixture (heliox) replaced air and combined with O2 (HeO2). Theoretical impact of HeO2 on inspiratory valves and gas mixing was computed. True fraction of inspired oxygen (FIO2del) was compared with fraction of inspired oxygen (FIO2) set on the ventilator (FIO2set). True tidal volume (VTdel) was compared with VT set on the ventilator (VTset) in volume control and with control VTdel at FIO2 1.0 in pressure control. FIO2del minimally exceeded FIO2set (</= 5%) except with the 7200 Series (FIO2del > FIO2set by 125%). In volume control, with the Veolar FT, Galileo, Evita 2, and Servo 900C, VTdel > VTset, with the 7200 Series VTdel < VTset (linear relationship, magnitude of discrepancy inversely related to FIO2set). With the Evita 4, VTdel > VTset (nonlinear relationship), whereas with the Servo 300 VTdel = VTset. In pressure control, VTdel was identical to control measurements, except with the 7200 Series (ventilator malfunction). Correction factors were developed that can be applied to most ventilators.
Mots-clé
Calibration, Equipment Design, Equipment Failure Analysis, Equipment Safety, Helium, Humans, Intensive Care Units, Oxygen, Positive-Pressure Respiration, Tidal Volume, Ventilators, Mechanical
Pubmed
Web of science
Création de la notice
27/06/2013 15:00
Dernière modification de la notice
20/08/2019 16:22
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