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Three versus seven day circuit changes of humidified oxygen circuitry: a feasibility study

Webster, Joan, Hall, Laurie, Goodwin, Di, Bligh, Susan, & Coyer, Fiona M. (2008) Three versus seven day circuit changes of humidified oxygen circuitry: a feasibility study. Australian Journal of Advanced Nursing, 25(4), pp. 23-30.

Abstract

Objective: The study compared the rate of humidifier acquired pneumonia between patients in whom humidifier circuitry is changed every three days with patients in whom circuitry is changed every 7 days in order to assess the feasibility of conducting a large scale randomised controlled trial to test the safety of extending the period between humidified circuit changes from three to seven days. Design: The study was a randomised controlled trial. Setting: The setting for the study was a 942 bed general teaching hospital in Queensland, Australia. Subjects: The subjects of the study were patients receiving humidified oxygen in surgical, medical and infectious diseases units of the hospital. Interventions: Consenting subjects were randomly allocated to either 3-day (control) or 7-day (intervention) circuit changes. Main outcome measures: The primary outcome measure was nosocomial pneumonia and the secondary outcome measures were death and length of humidification therapy. Results: Of the 51 eligible patients, 32 were included in the study (17 patients were randomised to the control group and 15 patients to the intervention group; recruitment rate 63%). During the study, four cases of nosocomial pneumonia occurred; two in the intervention group (13.3%) and two in the control group (11.8%) (χ2 = 0.018, p = 0.894). No patients died during the study period. Conclusion: No high quality evidence exists to assist nurses to make a decision about how frequently to change humidifier circuitry. Potential cost savings involved in extending the time frame between humidifier circuitry changes indicate that a large scale randomised controlled trial is both feasible and important.

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ID Code: 14914
Item Type: Journal Article
Additional URLs:
ISSN: 1447-4328
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > NURSING (111000)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Copyright Owner: Copyright 2008 Australian Nursing Federation
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 22 Sep 2008
Last Modified: 29 Feb 2012 23:45

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