1Staff Anesthetist and Intensive Care Physician, Department of Anesthesia and Intensive Care, Empress Elisabeth Hospital of the City of Vienna, Vienna, Austria.
Address correspondence and comments to Klaus Krasser.
Received from the
Department of Anesthesia
and Intensive Care, Empress Elisabeth Hospital
of the City of Vienna, Vienna, Austria. Published:
December 21, 2005.
Received from the Department of Anesthesia and Intensive Care, Empress Elisabeth Hospital of the City of Vienna, Vienna, Austria.
Published: December 21, 2005.
The correct citation of this correspondence is:
Krasser K. Bullard laryngoscope: improvement of illumination using a
battery-powered xenon light source. Internet Journal of Airway Management
Date accessed: month day, year.
Last updated: December 21, 2005.
We are familiar with the rigid fiberoptic Adult Bullard Elite Laryngoscope (BL, manufactured by Circon Corporation, Santa Barbara, California, United States) using the multifunctional intubating stylet and an appropriate tracheal tube exchange catheter passing through the hollow stylet as guide for the tracheal tube (1). The fiberoptic light bundle of the BL originates at the light connection; it transmits the illumination from the source, usually a special standard battery handle via a fitting bulb. The fiberoptic image bundle transmits the image from the distal tip of the BL blade to the eye piece. However, when using the standard battery handle, illumination and visualization of anatomic structures are rather poor and unreliable. Therefore, we preferred illumination via a stationary fiberoptic light source connected to a Storz-compatible fiberoptic light source adapter provided by the manufacturer of the BL, but assembling of these devices requires time and unnecessary delays, particularly in situations of unanticipated difficult conventional laryngoscopy and tracheal intubation.
We now use a new battery-powered xenon light source (Model 11301 D4, manufactured by Karl Storz Endoscopy, Tuttlingen, Germany), readily mounted on the BL. This light source is powered by two lithium batteries (3 V, type CR 123A) generating light intensity of more than 50000 lux, provided by light-emitting diode technology. This assembly worked well in more than 50 BL-assisted laryngoscopies and tracheal intubations without any equipment malfunction. We recommend this light source for improvement and reliability of illumination when used with the BL.
It is important to note, that the surface of the new Storz battery-powered xenon light source can be disinfected by wiping using a cotton soaked with a 70 percent alcohol solution, but not by immersion in cold sterilization and detergent solutions.
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