单选题
关于COPD严重程度分级正确的是
- A.轻度:FEV<img src="http://timg.fentiku.com/258/2018/12/19/SJzRgM89cy.png" title='SJzRgM89cy.png' alt='SJzRgM89cy.png'/>/FVC<80%,FEV<img src="http://timg.fentiku.com/258/2018/12/19/SJzRgM89cy.png" title='SJzRgM89cy.png' alt='SJzRgM89cy.png'/>≥80%预计值
- B.中度:FEV<img src="http://timg.fentiku.com/258/2018/12/19/1XjNASvXJC.png" title='1XjNASvXJC.png' alt='1XjNASvXJC.png'/>/FVC<80%,50%≤FEV<img src="http://timg.fentiku.com/258/2018/12/19/1XjNASvXJC.png" title='1XjNASvXJC.png' alt='1XjNASvXJC.png'/><80%预计值
- C.重度:FEV<img src="http://timg.fentiku.com/258/2018/12/19/GydHA5Z1Em.png" title='GydHA5Z1Em.png' alt='GydHA5Z1Em.png'/>/FVC<70%,30%≤FEV<img src="http://timg.fentiku.com/258/2018/12/19/GydHA5Z1Em.png" title='GydHA5Z1Em.png' alt='GydHA5Z1Em.png'/><50%预计值
- D.极重度:FEV<img src="http://timg.fentiku.com/258/2018/12/19/OTAC4ubHcy.png" title='OTAC4ubHcy.png' alt='OTAC4ubHcy.png'/>/FVC<50%,FEV<img src="http://timg.fentiku.com/258/2018/12/19/OTAC4ubHcy.png" title='OTAC4ubHcy.png' alt='OTAC4ubHcy.png'/>≤30%预计值
- E.极重度:FEV<img src="http://timg.fentiku.com/258/2018/12/19/lUUGJt1q9A.png" title='lUUGJt1q9A.png' alt='lUUGJt1q9A.png'/><70%预计值,伴慢性呼吸衰竭
正确答案:C
