A 28-year-old male patient has come for tracheostomy decannulation. He has a history of RTA 2months back. MRI shows diffuse axonal injury brain, done in September. other parameters normal. A fibreoptic laryngoscopy was done, shows normal vocal cord movements, no subglottic stenosis. Bronchoscopy done shows normal parameters. So planned for decannulation, strapping of 7.5mm tube done with conversion to speaking tube for 24 hours.
No stridor, spo2 average,97%.now changed to smaller diameter tube. But patient complained resp distress, but clinically no stridor. Spo2 97% average. Now difficulty in decannulation. Complaining of resp distress but spo2 96%. What are the causes of such problem?
