TABLE 3.

MODIFIED MEDICAL RESEARCH COUNCIL DYSPNEA SCALE

Grade I: breathless with strenuous exercise

Grade II: short of breath when hurrying on the level or walking up a slight hill

Grade III: walking slower than people of the same age on the level because of breathlessness or having to stop for breath when walking at own pace on the level

Grade IV: stopping for breath after walking about 100 yards or after a few minutes on the level

Grade V: too breathless to leave the house or breathless when dressing or undressing