论文部分内容阅读
目的探讨器质性心脏病患者与非器质性心脏病患者心率减速力(DC)与心率变异性(HRV)时域、频域及Lorenz散点图指标的相关性及临床意义。方法选择35例器质性心脏病患者和35例对照组,进行24h动态心电图检查离线测定DC、HRV时域、频域及Lorenz散点图指标长轴L和短轴W。结果与对照组比较,器质性心脏病组DC值减少较明显,HRV时域、频域指标亦减少,散点图指标中,L明显减少,差异有显著性意义(p<0.01～0.001)。散点图W无统计学差异(p>0.05)。器质性心脏病组患者DC与HRV时域、频域指标呈正相关(p<0.01～0.001),DC与散点图L、W无明显相关性。结论 DC与HRV时域、频域指标有较好的相关性,DC与Lorenz散点图指标,特别是W的内在联系还有待深入探讨。
Objective To investigate the correlation between heart rate decelerations (DC) and heart rate variability (HRV) in time domain, frequency domain and Lorenz scattergram in patients with organic heart disease and non-structural heart disease and its clinical significance. Methods Thirty-five patients with organic heart disease and 35 control subjects were enrolled in this study. 24-hour ambulatory electrocardiogram was used to measure the long-axis L and short-axis W indices of DC, HRV in time domain, frequency domain and Lorenz scattergram. Results Compared with the control group, the decrease of DC in the organic heart disease group was obvious, and the time domain and frequency domain of HRV were also decreased. In the scatter plot index, L decreased significantly (p <0.01-0.001) . Scatter plot W no significant difference (p> 0.05). There was a positive correlation between DC and HRV in patients with organic heart disease (p <0.01 ~ 0.001). There was no significant correlation between DC and scatter plots L, W. Conclusion There is a good correlation between DC and HRV in time domain and frequency domain. The intrinsic relationship between DC and Lorenz scatterplot, especially W, remains to be further explored.