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MRC dyspnoea scale

Medical Research Council dyspnoea scale

Grade Degree of breathlessness related to activities
1 Not troubled by breathlessness except on strenuous exercise
2 Short of breath when hurrying or walking up a slight hill
3 Walks slower than contemporaries on level ground because of breathlessness, or has to stop for breath when walking at own pace
4 Stops for breath after walking about 100m or after a few minutes on level ground
5 Too breathless to leave the house, or breathless when dressing or undressing

Adapted from Fletcher CM, Elmes PC, Fairbairn MB et al. (1959) The significance of respiratory symptoms and the diagnosis of chronic bronchitis in a working population. British Medical Journal 2:257-66.

This page was last updated: 13 December 2007

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Copyright @ 2012 National Institute for Health and Clinical Excellence. All rights reserved.