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Classification of the causes of reintubation.
| Respiratory insufficiency group | Respiratory muscle fatigue | |
| Excessive airway secretion | ||
| Weak cough | ||
| Hypoxaemia | ||
| Hypercapnia | ||
|
| ||
| Nonrespiratory insufficiency group | Upper airway factors | Laryngeal oedema |
| Mucosal ulcer, granulation | ||
| Vocal cord paralysis | ||
| Lowered level of consciousness | ||
| Haemodynamic instability | ||
