气道外肿物对呼吸阻抗的影响  

Study on respiratory impedance of patients with extratracheal tumour

作　　者：李长健[1] 王惠芬[1] 赵连云 

机构地区：[1]天津胸科医院肺功能科,300051

出　　处：《中华结核和呼吸杂志》2000年第9期548-549,共2页Chinese Journal of Tuberculosis and Respiratory Diseases

摘　　要：目的　应用脉冲振荡法 (IOS)探讨气道外肿物呼吸阻抗的变化规律和临床意义。方法测定并分析 30名健康人、2 8例气道外肿物病例的IOS指标 ,以及一秒钟用力呼气容积占用力肺活量比值 (FEV1/FVC)和最大呼气流量 容积曲线 (MEFV曲线 )等。同时用SPSS统计软件对数值结果作t检验。结果　肿物组 2 0赫兹 (Hz)时阻力和电抗 (R2 0 、X2 0 )、35Hz时阻力 (R35)的实测值占预计值 %显著高于健康组 (P <0 0 1) ;频谱图中肿物组阻力线于 2 0Hz后显著升高 ,电抗线于 2 0Hz附近达到最高 ,并于 35Hz趋向正常。Objective To determine the manifestation of impulse oscillometry (IOS) in variation of respiration impedance on patients with extratracheal tumour.Methods The IOS indices in 30 normal persons and 28 patients with extracheal tumour were measured. The ratio of forced expiratory volume after 1 second to forced vital capacity (FEV 1/FVC) was evaluated and the maximal expiratory flow volume curve (MEFV curve) was examined. The above values with t test of SPSS statistics software were analyzed.Results Compared with the normal group, in the extratracheal group the ratio of actual value of resistance to the predict from 20 Hz to 35 Hz increased obviously and this only occurred with the reactance at 20 Hz ( P <0.01). The resistance curve showed clear rise after the 20 Hz and the reactance curve peaked at 20 Hz and was leveled to normal at 35 Hz.Conclusion IOS is capable of presenting the distinctive indices for the study of respiration impedance on patients with extratracheal tumour.

关 键 词：气道外肿物 脉冲振荡法 呼吸阻抗 诊断 

分 类 号：R734.1[医药卫生—肿瘤]