Medical Research Council dyspnoea scale for grading the degree of a patient's breathlessness

  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 the level because of breathlessness, or has to stop for breath when walking at own pace
  4. Stops for breath after about 100 m or after a few minutes on the level
  5. Too breathless to leave the house, or breathless when dressing or undressing