CAJ | 학술논문

目的分析血压变异性和容积脉搏波特征参数变异性的相关性,确定相关性较好的参数,为利用容积脉搏波特征参数的变异性来估计血压变异性提供理论依据.方法同步连续采集运动前后19个样本的容积脉搏波信号和血压信号,根据容积脉搏波信号的波形特征,提取8个特征参数,利用皮尔森相关系数分析血压变异性和容积脉搏波特征参数变异性在时域的相关性.结果从容积脉搏波所提取的8个特征参数中,容积脉搏波主波高度的每搏变化与收缩压每搏变异性运动前后相关系数分别为0.76和0.75；波谷到降中峡时间的每搏变化与收缩压每搏变异性运动前后相关系数分别为0.74和0.78.结论容积脉搏波的主波高度的每搏变异性与每搏血压变异性变化之间存在较高的相关关系,可用于近似估计血压变异性.上述发现表明单独基于容积脉搏波的特征变异性来无创连续监测血压变异性具有理论可能性.
목적 분석혈압변이성화용적맥박파특정삼수변이성적상관성,학정상관성교호적삼수,위이용용적맥박파특정삼수적변이성래고계혈압변이성제공이론의거.방법 동보련속채집운동전후19개양본적용적맥박파신호화혈압신호,근거용적맥박파신호적파형특정,제취8개특정삼수,이용피이삼상관계수분석혈압변이성화용적맥박파특정삼수변이성재시역적상관성.결과 종용적맥박파소제취적8개특정삼수중,용적맥박파주파고도적매박변화여수축압매박변이성운동전후상관계수분별위0.76화0.75；파곡도강중협시간적매박변화여수축압매박변이성운동전후상관계수분별위0.74화0.78.결론 용적맥박파적주파고도적매박변이성여매박혈압변이성변화지간존재교고적상관관계,가용우근사고계혈압변이성.상술발현표명단독기우용적맥박파적특정변이성래무창련속감측혈압변이성구유이론가능성.
Objective To investigate the correlation between blood pressure variability and variabilities of some feature variables extracted from photoplethysmography (PPG) signal.Methods Continuous blood pressure (BP) and PPG signal were collected simultaneously from 19 healthy subjects under rest and after exercise.Eight feature variables were extracted from the PPG signal.The relationship between the beat-to-beat variability of BP and feature variables extracted from PPG were quantified by calculating Person's correlation coefficient.Results The variability of the amplitude of PPG was highly correlated with systolic BP variability both under rest (0.75) and after exercise (0.76).Meanwhile,the correlations between systolic BP variability and the variability of the time from the trough to the dicrotic north were 0.74(under rest) and 0.78(after exercise).Conclusion The amplitude variability of PPG is highly correlated with systolic BP variability and can be potentially used for monitoring BP variability.