COPD患者肺功能回報(bào):FEV1/FVC<60%,F(xiàn)EV/預(yù)計(jì)值:45%,患者PO250mmHg,PCO266mmHg,該患者按COPD嚴(yán)重程度分級屬于() COPD患者肺功能回報(bào):FEV1/FVC<65%,F(xiàn)EV1/預(yù)計(jì)值:80%,該患者按COPD嚴(yán)重程度分級屬于()