Wang Kun, Zhu Tiangang, Zhang Xianwen, Yu Chao, Cao Xinrong, Tang Jintian, Wan Zheng
Department of Cardiology, Tianjin Medical University General Hospital, Tianjin 300052, China.
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Zhonghua Xin Xue Guan Bing Za Zhi. 2015 May;43(5):448-51.
To compare the heart rate variability (HRV) measurements between ballistocardiogram (BCG) and electrocardiography (ECG).
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.
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).
HRV could also be measured reliably by calculating the JJ interval from BCG.
比较心冲击图（BCG）与心电图（ECG）测量心率变异性（HRV）的结果。
同步收集21例患者的BCG和ECG信号。采用BCG的JJ间期和ECG的RR间期来计算心动周期。在时域分析、频域分析和非线性分析中计算HRV分析参数。比较BCG和ECG得出的结果。
BCG和ECG计算得出的HRV分析参数具有高度相似性。BCG法与ECG法之间SDNN、TP、LF、HF和SD2的相关系数较高（r = 1）。两种方法之间rMSSD与SD2的相关系数为0.99，PNN50与LF/HF的相关系数为0.98。两种方法得出的HRV分析结果相似（P > 0.05）。
通过计算BCG的JJ间期也可可靠地测量HRV。
