CAJ | 학술논문

目的通过与心电图分析方法比较,研究临床中应用心冲击图进行心率变异性(HRV)分析的可行性.方法平静状态下同步采集21例患者的心冲击图和心电图信号,根据心冲击图波形中相邻的J峰计算出的JJ间期和心电图波形中相邻的R峰计算出的RR间期,分别计算心冲击图和心电图这两种方法在心率变异性分析中时域、频域和非线性域的测定值,分析相应测定值的相关性;并用配对f检验方法分析2组测定值之间的差异.结果根据心冲击图和心电图方法分别进行HRV分析得到的测定值中,2组的平均正常RR间期的标准差(SDNN)、总功率(TP)、低频功率(LF)、高频功率(HF)和长轴的均方根值(SD2)数值间的相关性最高(r=1),相邻RR间期差的均方根(rMSSD)和短轴的均方根值(SD1)、相差＞50 ms的相邻RR间期占RR间期总数的百分比(PNN50)和低频/高频比值(LF/HF)数值间的相关性均较高(r分别为0.99和0.98),2种方法进行HRV分析得到的各项测定值差异均无统计学意义(P＞0.05).结论临床上可以采用基于JJ间期的心冲击图方法进行心率变异性分析.
목적 통과여심전도분석방법비교,연구림상중응용심충격도진행심솔변이성(HRV)분석적가행성.방법 평정상태하동보채집21례환자적심충격도화심전도신호,근거심충격도파형중상린적J봉계산출적JJ간기화심전도파형중상린적R봉계산출적RR간기,분별계산심충격도화심전도저량충방법재심솔변이성분석중시역、빈역화비선성역적측정치,분석상응측정치적상관성;병용배대f검험방법분석2조측정치지간적차이.결과 근거심충격도화심전도방법분별진행HRV분석득도적측정치중,2조적평균정상RR간기적표준차(SDNN)、총공솔(TP)、저빈공솔(LF)、고빈공솔(HF)화장축적균방근치(SD2)수치간적상관성최고(r=1),상린RR간기차적균방근(rMSSD)화단축적균방근치(SD1)、상차＞50 ms적상린RR간기점RR간기총수적백분비(PNN50)화저빈/고빈비치(LF/HF)수치간적상관성균교고(r분별위0.99화0.98),2충방법진행HRV분석득도적각항측정치차이균무통계학의의(P＞0.05).결론 림상상가이채용기우JJ간기적심충격도방법진행심솔변이성분석.
Objective To compare the heart rate variability (HRV)measurements between ballistocardiogram (BCG) and electrocardiography (ECG).Methods The signals of BCG and ECG of 21 patients were collected synchronously.JJ intervals of BCG and RR intervals of ECG were used to calculate the cardiac periods.The parameters of HRV analysis were calculated in time domain analysis,frequency domain analysis and nonlinear analysis.The results derived from BCG and ECG were compared.Results The parameters of HRV analysis calculated from BCG and ECG had high similarity.The correlation coefficients of SDNN,TP,LF,HF and SD2 between the BCG and ECG methods were high (r =1).The correlation coefficients of rMSSD and SD2 were 0.99 and of PNN50 and LF/HF were 0.98 between the two methods.HRV analysis results derived from the two methods were similar (P ＞ 0.05).Conclusion HRV could also be measured reliably by calculating the JJ interval from BCG.