容积脉搏波在吸相和呼相间的变异性  

The Variability of Photoplethysmographic Pulse Wave between Inspiration and Expiration

作　　者：郎晓华[1] 俞梦孙[2] 

机构地区：[1]山东大学控制科学与工程学院,济南250061 [2]空军航空医学研究所,北京100142

出　　处：《中国生物医学工程学报》2011年第1期17-21,共5页Chinese Journal of Biomedical Engineering

摘　　要：分析吸气和呼气对容积脉搏波波形的影响。对10位受试者的容积脉搏波数据分别提取吸相和呼相时的脉搏幅值、周期、宽度3个特征量,比较在同一呼吸周期的吸相和呼相间这3个特征量的变异性,并利用相关系数法比较三者变异的相关性。实验表明,脉搏波幅值、周期和宽度均受呼吸影响,且在整个呼吸过程中脉搏波幅值和周期变化趋势最接近,即相关性较好,而在每一呼吸周期的吸相和呼相间,脉搏波周期和宽度的变异相关性较好。容积脉搏波在吸相和呼相间的变异性,将为呼吸疾病和其他病症的诊断提供更多信息。This article analyzes the influence of inspiration and expiration on photoplethysmographic（PPG） pulse waveform.Amplitude,period and width of pulse,as the three characteristic quantities of inspiration and expiration periods,were extracted from PPG signals of 10 people.Similar variation trends of pulse amplitude and width are observed in the whole course of respiration,i.e.they have the strongest correlation,while the variability of pulse period and width have the strongest correlation between inspiration and expiration.The variability of PPG pulse wave during inspiration and expiration periods could provide valuable information for the diagnoses of respiratory and its related diseases.

关 键 词：容积脉搏波 吸气 呼气 相关性 

分 类 号：R318[医药卫生—生物医学工程]