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lung diseases, respiratory distress syndrome

European Journal of Anaesthesiology (1)

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Effect of catheter design on tracheal pressures during tracheal gas insufflation
I. R. Dyer, M. Esmail, G. Findlay, J. S. Mecklenburgh, J. Dingley
Journal:

European Journal of Anaesthesiology / Volume 20 / Issue 9 / September 2003

Published online by Cambridge University Press:

11 July 2005, pp. 740-744

Print publication:

September 2003
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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.