Oxygen Weaning in Tracheostomy Patients

Target Oxygen Saturation Ranges

The British Thoracic Society recommends target SpO2 of 94-98% for standard patients and 88-92% for patients at risk for hypercapnic respiratory failure, with risk factors including moderate-to-severe COPD, severe chest wall/spinal disease, neuromuscular disease, severe obesity, cystic fibrosis, or bronchiectasis 3, 4

The British Thoracic Society suggests beginning weaning oxygen when the patient is clinically stable and oxygen saturation has been maintained in the upper zone of the target range for 4-8 hours, then gradually reducing oxygen delivery while monitoring for maintenance of target saturations 1, 2
The British Thoracic Society recommends using a tracheostomy mask as the primary delivery device, varying flow as necessary to achieve target saturation, and switching to a T-piece device fitted directly to the tracheostomy tube if the patient deteriorates 6
Humidification is essential for tracheostomized patients to maintain airway patency and reduce secretion buildup, according to the British Thoracic Society 7

For standard patients, the British Thoracic Society recommends stepping down progressively to 2 L/min via nasal cannulae (or tracheostomy mask equivalent) before cessation 1, 8
For hypercapnia-risk patients, the British Thoracic Society suggests stepping down to 1 L/min (or occasionally 0.5 L/min) via nasal cannulae or 24% Venturi mask at 2 L/min before cessation 1, 8

The British Thoracic Society recommends checking SpO2 after 1 hour of reduced oxygen, then four-hourly for stable patients, and not repeating blood gas measurements if target saturation is maintained and the patient remains stable 1, 2

The British Thoracic Society suggests stopping oxygen therapy when the patient is clinically stable on low-concentration oxygen, SpO2 remains within the desired range on two consecutive observations, and after stopping oxygen, monitoring SpO2 for 5 minutes, then rechecking at 1 hour 2, 8

The British Thoracic Society warns against suddenly ceasing oxygen therapy in patients with hypercapnic respiratory failure, as this can cause rapid fall in SpO2 below baseline levels, and recommends stepping down gradually 3, 4

The British Thoracic Society recommends tapering slowly to the usual maintenance oxygen delivery device and flow rate rather than complete cessation, and not making decisions about long-term oxygen requirements during acute exacerbations—reassessing after 8 weeks of stability 1, 8, 9

The British Thoracic Society advises against weaning too rapidly, as gradual stepwise reduction prevents destabilization, and against forgetting humidification, as tracheostomy bypasses natural airway humidification and dry airways impede weaning 1, 7, 8