🫁 mMRC Dyspnoea Scale
Grade exertional breathlessness with the mMRC dyspnoea scale.
Clinical takeaway
mMRC ≥ 2 indicates more symptoms in GOLD ABE.
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When to use
COPD symptom assessment and disability grading.
How it works
0 (breathless only on strenuous exercise) to 4 (too breathless to leave the house).
Key points
- mMRC ≥ 2 indicates more symptoms in GOLD ABE.
- Captures disability, not airflow limitation.
- Used alongside the CAT.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Breathlessness grade | 0 — Only with strenuous exercise |
|---|
→mMRC0/4
- COPD assessment：mMRC ≥ 2 indicates more symptoms in the GOLD ABE assessment.
| Breathlessness grade | 4 — Too breathless to leave the house / dressing |
|---|
→mMRC4/4
- COPD assessment：mMRC ≥ 2 indicates more symptoms in the GOLD ABE assessment.
Frequently asked questions
- What is mMRC Dyspnoea Scale?
- Grade exertional breathlessness with the mMRC dyspnoea scale.
- How is mMRC Dyspnoea Scale calculated? What is the core formula?
- 0 (breathless only on strenuous exercise) to 4 (too breathless to leave the house).
- When is mMRC Dyspnoea Scale used?
- COPD symptom assessment and disability grading.
- What are the key clinical points for mMRC Dyspnoea Scale?
- mMRC ≥ 2 indicates more symptoms in GOLD ABE. Captures disability, not airflow limitation. Used alongside the CAT.
- What are the limits and cautions when using mMRC Dyspnoea Scale?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is mMRC Dyspnoea Scale calculated in practice? Can you show a worked example?
- Inputs: Breathlessness grade 0 — Only with strenuous exercise → Result: mMRC 0 /4（COPD assessment: mMRC ≥ 2 indicates more symptoms in the GOLD ABE assessment.） Inputs: Breathlessness grade 4 — Too breathless to leave the house / dressing → Result: mMRC 4 /4（COPD assessment: mMRC ≥ 2 indicates more symptoms in the GOLD ABE assessment.）