Details of long-term ventilation (LTV) patients by epoch of initiation of LTV
| Number of patients (% of total) | |||
|---|---|---|---|
| 1995–1999 | 2000–2004 | 2005–2009 | |
| (n=17) | (n=53) | (n=74) | |
| Mode of support | |||
| Tracheostomy ventilation | 6 (35) | 9 (17) | 13 (18) |
| Non-invasive CPAP | 0 (0) | 5 (9) | 17 (23) |
| Non-invasive bilevel support | 11 (65) | 39 (74) | 44 (59) |
| Time dependent on ventilation | |||
| 24 h/d | 2 (12) | 6 (11) | 9 (12) |
| <24 h/d | 15 (88) | 47 (89) | 65 (88) |
| Diagnostic category | |||
| Neuromuscular disease | 11 (64) | 30 (57) | 26 (35) |
| Spinal injury | 1 (6) | 3 (6) | 5 (7) |
| Abnormal ventilatory control | 1 (6) | 7 (13) | 11 (15) |
| Airway malacia | 2 (12) | 3 (6) | 6 (8) |
| Craniofacial/OSA | 1 (6) | 6 (11) | 16 (22) |
| Other | 1 (6) | 4 (7) | 10 (13) |
| Trigger for initiation of LTV* | |||
| Failure to wean from ventilation | 5 (29) | 5 (10) | 18 (25) |
| Acute illness | 6 (35) | 9 (17) | 16 (22) |
| Sleep study results | 2 (12) | 14 (26) | 24 (33) |
| Symptoms of sleep-disordered breathing | 3 (18) | 13 (26) | 7 (10) |
| FVC<20% | 0 (0) | 7 (13) | 2 (3) |
| Other | 1 (6) | 4 (8) | 5 (7) |
*Data only available for 141 patients.
OSA, obstructive sleep apnoea; CPAP, continuous positive airway pressure; FVC, forced vital capacity