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The effect of pilot balloon design on estimation of safe tracheal tube cuff pressure

Janossy, K.M. and Pullen, J. and Young, D. and Bell, G. (2010) The effect of pilot balloon design on estimation of safe tracheal tube cuff pressure. Anaesthesia, 65 (8). pp. 785-791. ISSN 0003-2409

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Abstract

We studied the effect of pilot balloon design on the ability of experienced anaesthetists to assess and inflate tracheal tube cuffs to safe pressures. A model trachea was designed, incorporating a degree of compliance and an air leak, to evaluate six different pilot balloons grafted onto identical tracheal tubes. Pilot balloons were inflated to one of four pressures and anaesthetists were asked to estimate whether the pressure was acceptable, too low or too high. Anaesthetists were then asked to inflate the cuff of each tube. Overall, 103 (42.9%) of anaesthetists' assessments of tracheal tube cuff pressures were correct (33% correct would be expected by chance, p = 0.002). Pressures generated by anaesthetists inflating tracheal tube cuffs were very variable. Median (IQR [range]) pressures for each pilot balloon ranged from 29 (17-43 [9-56]) cmH(2)O to 74 (49-114 [4-140]) cmH(2)O (p < 0.001). The design of the pilot balloon significantly affects anaesthetists' ability to inflate tracheal tube cuffs to safe pressures.

Item type: Article
ID code: 28278
Keywords: pilot balloon design, tracheal tube, anaesthetics, tracheal tube cuffs, Mathematics, Anesthesiology and Pain Medicine
Subjects: Science > Mathematics
Department: Faculty of Science > Mathematics and Statistics
Related URLs:
Depositing user: Mrs Carolynne Westwood
Date Deposited: 15 Oct 2010 10:04
Last modified: 27 Mar 2014 09:08
URI: http://strathprints.strath.ac.uk/id/eprint/28278

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