MRC Dyspnea Scale
Posted by dkwinter
Grade Degree of breathlessness related to activities
1 Not troubled by breathlessness except on strenuous exercise
2 Short of breath when hurrying on the level or walking up a slight hill
3 Walks slower than most people on the level, stops after a mile or so, or stops after 15 minutes walking at own pace
4 Stops for breath after walking about 100 yds or after a few minutes on level ground
5 Too breathless to leave the house, or breathless when undressing


Source: Occupational Medicine. 2008; 58: 226-227.