Scoring Method for Describing the Position of a Tracheostomy Tube

Tracheostomies are artificial airway devices inserted into the neck. They can become displaced and lead to patient harm. Other than external visual inspection, there is no currently described system for describing the position of a tracheostomy tube within the airway. The investigators propose to undertake endoscopic inspection of the tracheostomy tube with a small fibre-optic camera from above and also through the tube to visualise its position within the airway. The investigators will take anonymised paired images and then score these using 6 different scoring systems. The investigators will determine which scoring system provides the simplest and most reproducible scores between 6 blinded assessors. A clinically useful scoring system could be used in future to predict problems with tracheostomy positioning.