Table 2 Baseline demographics and patient characteristics
From: Home mechanical ventilation: quality of life patterns after six months of treatment
Characteristic | mean (SD) or n (%) |
|---|---|
Total | 66 (100%) |
Gender | |
 Female | 20 (30.3%) |
 Male | 46 (69.7%) |
Age (years) | 51.5 (±18.1) |
Initiation of ventilation | |
 Acute | 40 (60.6%) |
 Elective | 24 (39.4%) |
Interface | |
 Invasive | 14 (21.2%) |
 Noninvasive | 52 (78.8%) |
O2 supplementation need | |
 No | 33 (50%) |
 Yes | 33 (50%) |
 O2 flow (L/min) | 1.8 (±2.8) |
Daily ventilation need (hours) | 12.6 (±6.5) |
Ventilator settings | |
 Target volume (mL) | 541 (±129) |
 Inspiratory pressure (cmH2O) | 22.2 (±4.8) |
 Exspiratory pressure (cmH2O) | 8.3 (±3.6) |
 Frequency (/min) | 15.9 (±3.6) |
Initial diagnosis | |
 Chronic obstructive pulmonary disease | 9 (13.6%) |
 Restrictive chest wall disease | 5 (7.6%) |
 Obesity hypoventilation syndrome | 20 (30.3%) |
 Non progressive neuromuscular disease | 19 (28.8%) |
 Progressive neuromuscular disease (amyotrophic lateral sclerosis) | 13 (19.7%) |
Lung function | |
 FVC% | 47.2 (±22.2) |
 FEV1% | 38.7 (±21.3) |
 FEV1/FVC% | 86.0 (±21.8) |
 PEF% | 36.5 (±20.6) |
Arterial blood gas | |
 paO2 (mmHg) | 69.7 (±14.2) |
 paCO2 (mmHg) | 49.7 (±17.5) |
 HCO3 (mmol/L) | 28 (±5.2) |