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目的探讨心电三维RR间期散点图的概念、原理及其优势。方法以连续三个心动周期的数据在三维空间中描记长时间动态心电图的RR间期散点集,结合数学模型分析常见心律失常的(频发室性早搏,传导阻滞)三维RR间期散点图的特征及其与二维Lorenz-RR散点图与二维差值散点图的关系。结果数学模型与实际记录的三维RR间期散点图十分相似,三维RR间期散点图的xoy、yoz观察面就是二维Lorenz-RR散点图,x+y+z=0观察面类似二维差值散点图。结论三维RR间期散点图各点集很少重叠,不仅兼有二维Lorenz-RR散点图与二维差值散点图各自的优势,而且提供了新的xoz观察面,此观察面提供了相隔RR间期的规律性,其潜在价值需要进一步观察。
Objective To explore the concept, principle and advantages of ECG three-dimensional RR interval scatter plot. Methods Three-dimensional RR interval scatter set was recorded in three-dimensional space with continuous three-cardiogram data. Combined with mathematical model, three-dimensional RR interval dispersion (frequent premature ventricular contractions and blockade) The Characteristics of Plot and Their Relationship with Two-dimensional Lorenz-RR Scatter and Two-dimensional Difference Scatterplot. Results The mathematical model is very similar to the actual recorded three-dimensional RR interval scattergram. The xoy and yoz observation surface of the three-dimensional RR interval scattergram is a two-dimensional Lorenz-RR scattergram, and the x + y + z = 0 observation surface is similar Two-dimensional difference scatter plot. CONCLUSIONS The three-dimensional RR interval scatter plots rarely overlap each other. They not only combine the advantages of the two-dimensional Lorenz-RR scatter plot with the two-dimensional difference scatter plot, but also provide a new xoz observation plane Provides a regularity of RR intervals, and its potential value requires further observation.