Parameter | SMT (n=25) | NIV (n=24) |
Age (years) | 74.5±10.7 | 74.1±12.4 |
Gender, M/F (no of patients) | 12/13 | 14/10 |
Aetiology of ARF (no of patients) | ||
ACPE | 13 | 12 |
Pneumonia | 1 | 5 |
COPD | 11 | 7 |
Aetiology combined with (no of patients) | ||
ACPE and pneumonia | 4 | 2 |
ACPE and pneumonia and COPD | 2 | 2 |
COPD and pneumonia | 7 | 4 |
Physiological measurements | ||
HR (beats/min) | 114±32 | 119±31 |
SBP (mm Hg) | 165±37 | 163±44 |
RR (breaths/min) | 30±6 | 31±7 |
SpO2 (%) | 81±10 | 74±18 |
PaO2/FiO2 (mm Hg) | 221±55 | 212±90 |
PvCO2 (mm Hg) | 53±17 | 53±17 |
pH | 7.29±0.13 | 7.30±0.10 |
Severity of illness | ||
SOFA | 3.1±1.7 | 3.4±1.9 |
SAPS II | 33.6±10.5 | 36.8±8.7 |
Predicted death probability (%) | 18.4±16.6 | 21.7±14.4 |
↵* Plus–minus values are presented as mean±SD.
ACPE, acute pulmonary oedema; ARF, acute respiratory failure; COPD, chronic obstructive pulmonary disease; HR, heart rate; NIV, non-invasive ventilation; PaO2, arterial oxygen pressure; PaO2/FiO2, oxygenation index; PvCO2, venous carbon dioxide pressure; SAPS II, simplified acute physiology score II; SBP, systolic blood pressure; SMT, standard medical treatment; SOFA, sequential organ failure assessment score; SpO2, peripheral oxygen saturation.