FEV0.5及FEV0.75在支气管哮喘儿童肺功能测定中的临床意义

郑桂梅, 唐兰芳

Clinical significance of FEV0.5 and FEV0.75 in the determination of pulmonary function in children with bronchial asthma

ZHENG Guimei, TANG Lanfang

表 2 阻塞性肺通气功能障碍患儿支气管舒张试验前后FEV0.5 和FEV0.75 改善率的不同截止点的临床诊断价值分析

Tab 2 Clinical diagnostic value analysis of different cut-off points for improvement rates of FEV0.5 and FEV0.75 before and after bronchodilation testing in children with obstructive ventilation dysfunction

Item Sensitivity/% Specificity/% Youden index Cut-off point of FEV0.5 improvement rate 11% 92.8 85.7 0.79 12% 92.8 100.0 0.93 14% 92.8 100.0 0.93 16% 92.8 100.0 0.93 18% 85.7 100.0 0.86 20% 78.5 100.0 0.79 Cut-off point of FEV0.75 improvement rate 10% 100.0 100.0 1.00 12% 100.0 100.0 1.00 14% 100.0 100.0 1.00 18% 78.5 100.0 0.79