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Table 1 The Medical Research Council/American Thoracic Society Dyspnea Grading Method [9]

From: Long-term results of diaphragmatic plication in adults with unilateral diaphragm paralysis

Grade

Severity

Explanation

Grade 0

None

No trouble with breathing except with strenuous exercise

Grade 1

Mild

Trouble with shortness of breath when hurrying on level or walking up a slight hill

Grade 2

Moderate

Walks slower than people of same age on the level or has to stop for breath walking at own pace on the level

Grade 3

Severe

I stop for breath after walking 100 yards or after a few minutes on the level.

Grade 4

Very severe

Too breathless to leave the house or breathless when dressing or undressing