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Table 8 MRC dyspnea scale

From: The AIMAR recommendations for early diagnosis of chronic obstructive respiratory disease based on the WHO/GARD model*

Level of dyspnea Symptoms referred or reported
0 Presents fatigue after strenuous exercise
1 Averts shortness of breath when walking fast or walking uphill
2 Walks more slowly than someone of similar age due to dyspnea
3 Stops after a few minutes or 100 meters when walking
4 Obliged to not move from home; dyspnea when getting dressed or undressed