fvc比值fvc
用力肺活量forced vital capacity, FVC
最大呼气中期流速expiratory flow during middle half of the FVC
用力呼气中段流量forced expiratory flow during middle half of FVC, FEF25-75%
用力肺活量FVC forced vital capacity
用力呼气中段流量forced expiratory flow during middle half of FVC【生理】