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Shortcomings of cuffed paediatric tracheal tubes
M Weiss1, A Dullenkopf, C Gysin
1Department of Anaesthesia and Department of Otorhinolaryngology, University Children's Hospital, Steinwiesstrasse 75, CH-8032 Zurich, Switzerland. markus.weiss@kispi.unizh.ch
British Journal of Anaesthesia
|December 11, 2003
Summary
Most pediatric cuffed tracheal tubes (CPTTs) are poorly designed, especially smaller sizes. Improved CPTT designs with better cuff and depth marking placement are urgently needed for patient safety.
Area of Science:
- Medical Devices
- Pediatric Anesthesiology
- Airway Management
Background:
- Pediatric cuffed tracheal tubes (CPTTs) are widely used for airway management in children.
- The design adequacy of available CPTTs has not been thoroughly evaluated.
Purpose of the Study:
- To assess the design adequacy of commercially available pediatric cuffed tracheal tubes (CPTTs).
Main Methods:
- Evaluated 15 series of pediatric tracheal tubes (cuffed and uncuffed) from four manufacturers.
- Measured tube outer diameter, cuff dimensions at 20 cm H2O pressure, and depth markings.
- Compared measurements with age-related tracheal dimensions.
Main Results:
- Significant variations in outer diameters and cuff sizes were observed between manufacturers and tube types.
- Cuff dimensions frequently did not accommodate maximal age-related tracheal diameters.
- Depth markings were often inaccurate, and cuff placement could lead to laryngeal or deep tracheal positioning.
Conclusions:
- Many pediatric cuffed tracheal tubes, particularly smaller sizes, exhibit inadequate design.
- There is an urgent need for improved CPTT designs featuring short, high-volume, low-pressure cuffs, adequate subglottic space, and accurate depth markings.