Answer: Inner cannula is very important for patients especially when they have a lot of secretions. First of all, it is easier to pull the inner cannula out and clean it to maintain hygiene of the airway. Secondly, if patients develop a mucus plug, you can pull the inner cannula out and have the outer cannula serve as the airway. You can then either place a new inner cannula or clean the plug out of the old one and reuse it depending on whether the tube is disposable or not. Maintaining hygiene and management of emergent cannula blockages can become difficult if you do not have the inner cannula as changing the whole tracheostomy tube is more work and often uncomfortable for the patients.
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