Bench testing of pressure support ventilation with three different generations of ventilators

J. C. Richard, A. Carlucci, L. Breton, N. Langlais, S. Jaber, S. Maggiore, S. Fougère, A. Harf, L. Brochard

Research output: Contribution to journalArticle

Abstract

Objective: The new generations of intensive care ventilators tend to be more innovative and sophisticated than previous ones, but little is known about their respective performance for delivering pressure support ventilation (PSV) and how they compare to previous generations. Design: Active lung model bench test. Apparatus: Twenty-two commercially available ventilators classified into three categories: new generation ventilators (after 1993, n=7), previous generation (before 1993,n=6), and recent piston or turbine-based ventilators (n=9). Measurements and results: During PSV, the unloading efficacy of the assistance depends on the ventilator's ability to meet inspiratory flow demand. Three levels of flow (0.1 l/s, 0.6 l/s, and 1.2 l/s) were used to simulate inspiratory demand and the net area of the inspiratory airway pressure-time trace was calculated over the first 0.3 s, 0.5 s, and 1 s (Area 0.3, Area 0.5, and Area tot) with three levels of PSV (5 cmH 2O, 10 cmH 2O, and 15 cmH 2O). To assess the respective role of pressure support delivery and triggering function, triggering sensitivity was assessed independently by measuring the time delay (TD tg) and the pressure fall (ΔPaw tg) with two levels of inspiratory drive. All the new generation ventilators exhibited significantly better results than most of the previous generation ventilators regarding Area 0.3 and TD tg, indicating large improvements in terms of triggering and pressurisation. Conclusion: Regarding PSV and trigger performance, the new generation ventilators - but also some piston and turbine-based ventilators - outperform most of previous generation ventilators.

Original languageEnglish
Pages (from-to)1049-1057
Number of pages9
JournalIntensive Care Medicine
Volume28
Issue number8
DOIs
Publication statusPublished - 2002

Fingerprint

Mechanical Ventilators
Ventilation
Pressure
Critical Care
Lung

Keywords

  • Demand-valve
  • Pressure support ventilation
  • Trigger
  • Work of breathing

ASJC Scopus subject areas

  • Critical Care and Intensive Care Medicine

Cite this

Richard, J. C., Carlucci, A., Breton, L., Langlais, N., Jaber, S., Maggiore, S., ... Brochard, L. (2002). Bench testing of pressure support ventilation with three different generations of ventilators. Intensive Care Medicine, 28(8), 1049-1057. https://doi.org/10.1007/s00134-002-1311-9

Bench testing of pressure support ventilation with three different generations of ventilators. / Richard, J. C.; Carlucci, A.; Breton, L.; Langlais, N.; Jaber, S.; Maggiore, S.; Fougère, S.; Harf, A.; Brochard, L.

In: Intensive Care Medicine, Vol. 28, No. 8, 2002, p. 1049-1057.

Research output: Contribution to journalArticle

Richard, JC, Carlucci, A, Breton, L, Langlais, N, Jaber, S, Maggiore, S, Fougère, S, Harf, A & Brochard, L 2002, 'Bench testing of pressure support ventilation with three different generations of ventilators', Intensive Care Medicine, vol. 28, no. 8, pp. 1049-1057. https://doi.org/10.1007/s00134-002-1311-9
Richard, J. C. ; Carlucci, A. ; Breton, L. ; Langlais, N. ; Jaber, S. ; Maggiore, S. ; Fougère, S. ; Harf, A. ; Brochard, L. / Bench testing of pressure support ventilation with three different generations of ventilators. In: Intensive Care Medicine. 2002 ; Vol. 28, No. 8. pp. 1049-1057.
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