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对纤维性肺泡炎(CFA)、支气管扩张(BE)、慢性阻塞性肺疾病(COPD)、心衰(HF)患者的肺捻发音频率、波形及时相变化进行了分析,旨在评价不同病理生理状态下肺捻发音的特征。方法选择确诊为CFA、BE、COPD和HF患者各10例。将2个麦克风(响应频率4～20Hz)置于每侧肺听诊捻发音最明显处,坐位记录肺音变化;用肺量计夹鼻口,测出气体流速。将两者用4导FM记录仪(频率反应范围0～10Hz)同步描记进行分析。时相指标主要包括肺捻发音在呼吸周期中出现和终止的时间,捻发音持续时间等,均以占呼吸周期的百分比表示。频率指标有最大强度频率及—20dB强度水平
The frequency of pulmonary twist, waveforms and time-phase changes in patients with fibroid alveolitis (CFA), bronchiectasis (BE), chronic obstructive pulmonary disease (COPD) and heart failure (HF) were analyzed to evaluate the effects of different pathophysiology The state of pulmonary twist pronunciation features. Methods Ten patients diagnosed as CFA, BE, COPD and HF were selected. The two microphones (response frequency 4 ~ 20Hz) placed on each side of the lung auscultation twist whistling at the most obvious place, seat recording changes in lung sounds; spleen with the nose mouth to measure the gas flow rate. The two were used 4-lead FM recorder (frequency response range of 0 ~ 10Hz) synchronous tracing analysis. Time phase indicators mainly include the occurrence and termination of pulmonary twist in the respiratory cycle, the duration of the twist, etc., are expressed as a percentage of the respiratory cycle. The frequency index has the maximum intensity frequency and -20dB intensity level