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Table 2 Baseline ventilatory characteristics of HMV patients in Chile (n = 1105)

From: Results of the home mechanical ventilation national program among adults in Chile between 2008 and 2017

O2 supplementation need (LTOT) n (%) 688 (62.4)
Interface
Non-invasive n (%) 1047 (94.8)
Invasive (tracheostomy) N (%) 58 (5.2)
Time in home mechanical ventilation (months) Median [IQR] 21.6 (12.2–49.5)
Ventilatory modes (n = 706 patients)
Spontaneous/timed (S/T) n (%) 613 (86.8)
Spontaneous (S) n (%) 34 (4.8)
Hybrid (AVAPS or iVAPS) n (%) 46 (6.5)
Other modes n (%) 13 (1.8)
Compliance (hours/day) Median [IQR] 7.3 (5.8–8.8)
Ventilator settings (n = 706 patients)
IPAP (cmH2O) Median [IQR] 16 (14–18)
EPAP (cmH2O) Median [IQR] 6 (6–8)
Maximum IPAP (cmH2O) (only hybrid mode) Median [IQR] 18 (16–22)
Backup respiratory rate Median [IQR] 15 (14–16)
  1. HMV home mechanical ventilation, LTOT long time oxygen therapy, AVAPS average volume assured pressure support, iVAPS intelligent volume-assured pressure support, OTHER MODES controlled assist mode, synchronous intermittent mandatory ventilation, pressure control and volume control, IPAP inspiratory positive airway pressure, EPAP expiratory positive airway pressure