Table 1

Details of long-term ventilation (LTV) patients by epoch of initiation of LTV

 Number of patients (% of total)
1995–19992000–20042005–2009
(n=17)(n=53)(n=74)
Mode of support
 Tracheostomy ventilation6 (35)9 (17)13 (18)
 Non-invasive CPAP0 (0)5 (9)17 (23)
 Non-invasive bilevel support11 (65)39 (74)44 (59)
Time dependent on ventilation
 24 h/d2 (12)6 (11)9 (12)
 <24 h/d15 (88)47 (89)65 (88)
Diagnostic category
 Neuromuscular disease11 (64)30 (57)26 (35)
 Spinal injury1 (6)3 (6)5 (7)
 Abnormal ventilatory control1 (6)7 (13)11 (15)
 Airway malacia2 (12)3 (6)6 (8)
 Craniofacial/OSA1 (6)6 (11)16 (22)
 Other1 (6)4 (7)10 (13)
Trigger for initiation of LTV*
 Failure to wean from ventilation5 (29)5 (10)18 (25)
 Acute illness6 (35)9 (17)16 (22)
 Sleep study results2 (12)14 (26)24 (33)
 Symptoms of sleep-disordered breathing3 (18)13 (26)7 (10)
 FVC<20%0 (0)7 (13)2 (3)
 Other1 (6)4 (8)5 (7)
  • *Data only available for 141 patients.

  • OSA, obstructive sleep apnoea; CPAP, continuous positive airway pressure; FVC, forced vital capacity