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Table 3. Staging of COPD based on symptoms, signs, 6 minute walk test and peak expiratory
flow rate.
| |
Symptoms(Cough & sputum) |
Signs |
6 minute walk test |
PEF (optional) |
| At risk |
No dyspnoea, hypersecretion + |
|
|
|
| Mild |
Dyspnoea on unaccustomed activity or climbing two flight of stairs |
Mild hyperinflation |
>200 m |
50-70% |
| Moderate |
Dyspnoea on accustomed activity |
Moderate hyperinflation |
100-200 m |
30-50% |
| Severe |
Dyspnoea at rest |
Near absence of breath sounds,
respiratory failure, polycythemia, CCF |
< 100 m |
< 30% |
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