Table 1
Clinical findings on attendance at hospital
| Patient characteristics | 1 | 2 | 3 |
|---|---|---|---|
| Smoker | + | + | + |
| Past respiratory disease | None | None | Asthma |
| Symptoms | |||
| Breathlessness | + | ++ | ++ |
| Chest tightness | + | ++ | ++ |
| Headache | + | + | + |
| Haemoptysis | _ | + | _ |
| Rigors | + | + | + |
| Nausea | _ | _ | + |
| Wheeze | _ | _ | _ |
| Investigations | |||
| Temperature (°C) | 38.9 | 38.4 | 38.7 |
| Pulse (beats/minute) | 140 | 110 | 100 |
| % O2 saturation (on high flow oxygen) | 91 | 94 | 92 |
| MetHb% | 0.6 | 0.5 | 0.9 |
| Exhaled CO (parts per million) | 1.4 | 1.6 | 1.2 |
| White cell count | 21.6 | 18.4 | 12.7 |
| Liver function tests | Normal | Not done | Increased γGT |
| FEV1 (l) (%pred) | 3.89 (89) | 1.51 (40) | 2.25 (51) |
| FVC (l) (pred) | 5.45 (105) | 1.77 (39) | 2.52 (48) |
| Chest x ray infiltrates | + | ++ | ++ |
