Initial management within 24 h of admission
| Formal prescription of level of inspired oxygen | ||
| Overall | 64 (886/1375 known) | |
| Sa,O2 | ≤92 | 75 (328/439) |
| >92 | 62 (377/613) | |
| Pa,O2 | <8 kPa | 76 (269/355) |
| 8–9.99 kPa | 71 (231/326) | |
| 10+ kPa | 68 (282/417) | |
| Repeat arterial blood gases | ||
| Overall | 34 (371/1109 done on admission) | |
| Pa,CO2 | >6.0 kPa | 49 (225/456) |
| ≤6.0 kPa | 22 (144/642) | |
| pH | <7.35 | 63 (141/224) |
| 7.35+ | 26 (224/861) | |
| Pa,CO2>6.0 kPa & pH<7.35 | 65 (128/197) | |
| Assisted ventilation IPPV NIPPV | ||
| Overall | 3 (40/1400) | |
| First COPD | 3 (23/919) | |
| Re-admission | 3 (10/400) | |
| Pa,CO2 | >6.0 kPa | 7 (34/456) |
| ≤6.0 kPa | 1 (4/642) | |
| PH | <7.26 | 15 (11/72) |
| 7.26–7.34 | 11 (16/152) | |
| 7.35+ | 1 (11/861) | |
| Pa,CO2>6.0 kPa & pH<7.35 | 13 (25/197) | |
| Medication | ||
| Nebulized bronchodilator | 91 (1267/1400) | |
| Steroids | 85 (1183/1400) | |
| Antibiotics | 80 (115/1400) | |
Data presented as % (absolute fraction)
Sa,O2: arterial oxygen saturation
Pa,O2: arterial oxygen tension
Pa,CO2: arterial carbon dioxide tension
IPPV: invasive positive pressure ventilation
NIPPV: noninvasive positive pressure ventilation.