For pneumonectomy, the sensitivity, specificity and accuracy of Fres, R5, R20, and Rp to predict post operative respiratory failure were better than FEV 1.0 and MVV%.

• R2 0 >140%25预测肺叶切除术后是否发生呼衰的敏感度、特异度、准确性与最大自主通气量 (MVV %25 ) <5 0%25相接近。