Evaluation of an intervention to reduce tidal volumes in ventilated ICU patients†‡

C P Bourdeaux, K Birnie, A Trickey, M J C Thomas, J Sterne, J L Donovan, J Benger, J Brandling, T H Gould

Research output: Contribution to journalArticle (Academic Journal)peer-review

14 Citations (Scopus)


BACKGROUND: There is considerable evidence that the use of tidal volumes <6 ml kg(-1) predicted body weight (PBW) reduces mortality in mechanically ventilated patients. We evaluated the effectiveness of using a large screen displaying delivered tidal volume in ml kg(-1) (PBW) for reducing tidal volumes.

METHODS: We assessed the intervention in two 6-month periods. A qualitative study was undertaken after the intervention period to examine staff interaction with the intervention. The study was conducted in a mixed medical and surgical intensive care unit at University Hospitals Bristol, UK. Consecutive patients requiring controlled mechanical ventilation for more than 1 h were included. Alerts were triggered when tidal volume breached predetermined targets and these alerts were visible to ICU clinicians in real time.

RESULTS: A total of 199 patients with 7640 h of data were observed during the control time period and 249 patients with 10 656 h of data were observed in the intervention period. Time spent with tidal volumes <6 ml kg(-1) PBW increased from 17.5 to 28.6% of the period of controlled mechanical ventilation. Time spent with a tidal volume <8 ml kg(-1) PBW increased from 60.6 to 73.9%. The screens were acceptable to staff and stimulated an increase in attendance of clinicians at the bedside to adjust ventilators.

CONCLUSIONS: Changing the format of data and displaying it with real-time alerts reduced delivered tidal volumes. Configuring information in a format more likely to result in desired outcomes has the potential to improve the translation of evidence into practice.

Original languageEnglish
Pages (from-to)244-51
Number of pages8
JournalBritish Journal of Anaesthesia
Issue number2
Publication statusPublished - Aug 2015

Bibliographical note

© The Author 2015. Published by Oxford University Press on behalf of the British Journal of Anaesthesia. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

Structured keywords

  • Centre for Surgical Research


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