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Effect of catheter design on tracheal pressures during tracheal gas insufflation

Published online by Cambridge University Press:  11 July 2005

I. R. Dyer ,
M. Esmail ,
G. Findlay ,
J. S. Mecklenburgh  and
J. Dingley
I. R. Dyer
Affiliation:
Morriston Hospital, Swansea, UK
M. Esmail
Affiliation:
Prince Phillip Hospital, Llanelli, UK
G. Findlay
Affiliation:
University Hospital of Wales, Cardiff, UK
J. S. Mecklenburgh
Affiliation:
University of Wales College of Medicine, Cardiff, UK
J. Dingley
Affiliation:
Morriston Hospital, Swansea, UK
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Extract

Summary

Background and objective: This study investigated the distribution of pressures within a model trachea, produced by five different tracheal gas insufflation devices. The aim was to suggest a suitable design of a tracheal gas insufflation device for clinical use.

Methods: Each device was tested using insufflation flow rates of 5 and 10 L min−1. For each flow rate, the pressure within the tracheal model was measured at 33 fixed points.

Results: The Boussignac tracheal tube produced the most even pressure distribution, while a reverse-flow catheter produced pressure changes of the smallest magnitude.

Conclusions: We suggest that catheters producing the lowest pressure changes are likely to be safer for clinical use.

Keywords

DIAGNOSTIC TECHNIQUES AND PROCEDURES, insufflationGASES, carbon dioxideLUNG DISEASES, respiratory distress syndromeRESPIRATION, respiratory dead space, respiratory mechanicsRESPIRATORY SYSTEM, trachea
Type
Original Article
Information
European Journal of Anaesthesiology , Volume 20 , Issue 9 , September 2003 , pp. 740 - 744
Copyright
© 2003 European Society of Anaesthesiology

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