Relative indications and contraindications for NIV at exacerbation of COPD
| Indications | Contraindications |
|---|---|
| Exacerbation with respiratory acidaemia Paco2>6 kPa and pH <7.35 but >7.25 | Inability to protect airway |
| Respiratory rate >24 breaths/min | Life threatening hypoxaemia |
| Haemodynamic instability | |
| Impaired consciousness or agitation | |
| Undrained pneumothorax | |
| Inability to clear respiratory secretions |