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目的 探讨平静呼吸肺功能测试方法对慢性阻塞性肺疾病(COPD)患者检测的意义及价值。方法 COPD患者21例及健康对照组 16例，用平静呼吸方法进行肺功能检测，并对其主要指标与常规肺功能用力呼气流量－容积曲线的主要指标进行相关性分析。结果 COPD患者在潮气呼吸中，反映阻塞的指标达峰时间比(TPTEF/TE)和达峰容积比（VPEF/VE）降低。在脉冲震荡测定中,总气道阻力(R5)，小气道阻力(R5－R20)和共振频率 (RF) 增高。上述两种方法主要指标各自并分别与常规肺功能中的主要指标呈高度相关，P< 0.05。讨论 平静呼吸肺功能测定可作为病情严重度评价和康复疗效的考核。
Objective To investigate the significance and value of the method of measuring the respiratory function of calm breathing in the patients with chronic obstructive pulmonary disease (COPD). Methods Twenty-one COPD patients and 16 healthy controls were enrolled in this study. Pulmonary function tests were performed by the method of calm breathing. The main indexes of COPD were compared with those of conventional forced expiratory flow volume-volume curve. Results In patients with COPD, the peak-to-peak time (TPTEF / TE) and peak-to-peak volume ratio (VPEF / VE) Total airway resistance (R5), small airway resistance (R5-R20) and resonance frequency (RF) increased during pulsatility measurements. The main indexes of these two methods were respectively and highly correlated with the main indexes of routine pulmonary function, P <0.05. Discussion Calm breathing pulmonary function tests can be used as an assessment of the severity of illness and rehabilitation efficacy assessment.