Table 5 Suggested criteria for non-invasive ventilation (NIV): Provisional European consensus criteria for NIV (European ALS/MND Consortium and European Neuromuscular Centre workshop on non-invasive ventilation in MND, May 2002) [with permission from Leigh et al. 2003]
| Symptoms related to respiratory muscle weakness. At least one of | |
|---|---|
| • Dyspnoea | |
| • Orthopnoea | |
| • Disturbed sleep (not caused by pain) | |
| • Morning headache | |
| • Poor concentration | |
| • Anorexia | |
| • Excessive daytime sleepiness (ESS > 9) | |
| AND | Evidence of respiratory muscle weakness (FVC ≤ 80% or SNP ≤ 40 cmH2O) |
| AND | Evidence of EITHER: |
| significant nocturnal desaturation on overnight oximetry | |
| OR | |
| morning ear lobe blood gas pCO2 ≥ 6.5 kPa | |