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Table 3 Emphysema Lobar Grading

From: Design of the exhale airway stents for emphysema (EASE) trial: an endoscopic procedure for reducing hyperinflation

Lung Grade Percentage of Lung Destruction within the Lobe
0 No lung destruction
1 1-25% lung destruction
2 26-50% lung destruction
3 51-75% lung destruction
4 76-100% lung destruction