Choose the statement that best matches your breathing during daily activity. The modified MRC scale grades breathlessness from one to five.
Grade
— pts
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- Risk spectrum with your position marked
- Reference ranges from the original publication
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Scientific references
What the scale measures
Rather than counting breaths, the mMRC scale asks how breathlessness limits what you do. It is one of the two pillars, alongside exacerbation history, that guide COPD treatment intensity.
The five grades
- Grade 1 means breathlessness only with strenuous effort
- Grade 2 appears when hurrying or climbing slopes
- Grade 3 means walking slower than peers
- Grades 4 and 5 limit leaving the house
Understanding your result
Grades of 3 or more in a smoker or ex smoker over forty warrant spirometry to look for COPD, even without a chronic cough.
Beyond COPD
Heart failure, anemia, deconditioning and obesity produce the same grades, so the scale starts a conversation rather than ending one.