采用FZ—1型肺阻抗分析仪测定19例慢性阻塞性肺疾病患者的呼吸阻抗,与44例正常人对照,两者差异有非常显著意义(P<0.001)。认为该仪器对于气道阻力增加和肺顺应性降低等呼吸阻抗改变疾病的诊断,以及判断药物疗效和病情随访有较大价值。其敏感性不次于流速容量曲线,且较FEV1％为高。可以发现潜在的早期小气道疾病。 Respiratory impedance was measured by FZ-1 pulmonary impedance analyzer in 19 chronic obstructive pulmonary disease patients, compared with 44 normal controls, the difference was significant (P <0.001). It is believed that this instrument is of great value in the diagnosis of respiratory resistance change diseases such as increased airway resistance and decreased lung compliance, as well as in judging the efficacy and duration of drug follow-up. Its sensitivity is not inferior to the flow rate capacity curve, and higher than FEV1%. Potential early-stage small airway disease can be found.