A comparison of the use of Trachlight and Eschmann multiple-use introducer in simulated difficult intubation.
OBJECTIVE
The Eschmann multiple-use introducer is widely used in the management of difficult intubations. Transillumination of the neck is less commonly used. We conducted a randomized crossover study comparing the Trachlight lightwand and Eschmann multiple-use introducer in simulated difficult intubation.


METHODS
Sixty-four healthy patients were studied using a standard anaesthetic and full muscle relaxation assessed by train of four. A Macintosh laryngoscope was then inserted and then lowered to simulate a Grade 3 view. Tracheal placement was attempted with both Trachlight lightwand and Eschmann multiple-use introducer in a randomized order. Anaesthetists placing the devices had extensive experience with the Eschmann multiple-use introducer, but only 15 previous uses of the Trachlight. Success rates and time for tracheal placement were recorded.


RESULTS
The Eschmann multiple-use introducer and Trachlight were successfully placed in 96.8% and 93.7%, respectively (n.s.). Mean (SD) time to intubation for Eschmann multiple-use introducer and Trachlight were 15(6) and *21(13), respectively (*P < 0.001).


CONCLUSIONS
The Trachlight is a potentially useful alternative to the Eschmann multiple-use introducer in difficult intubation.
Harvey
K
K
University Hospital of Wales, Cardiff University, Cardiff, UK.
Davies
R
R
Evans
A
A
Latto
I P
IP
Hall
J E
JE
D005260:Female; D006801:Humans; D007440:Intubation / Q000295:instrumentation* / Q000379:methods*; D008297:Male; D008875:Middle Aged