Ikeda N, DeLand E C, Miyahara H, Takeuchi A, Yamamoto H, Sato T
Kitasato University, Kanagawa, Japan.
J Electrocardiol. 1988;21 Suppl:S122-8. doi: 10.1016/0022-0736(88)90076-3.
A personal computer-based arrhythmia generator has been developed based upon mathematical models of modulated parasystole and the related equations. A system of nonlinear difference equations is used to generate the time series of RR intervals of ECG that contain normal as well as ectopic QRS waves. The ECG waveform is synthesized according to the computed RR interval and the type of QRS wave and output via DA converter in a real-time base. Various types of ECGs with ventricular ectopic beats and those with very long periods were generated by selecting values for a small number of model parameters. This method requires neither large RAM nor external memory for storing a library of arrhythmic ECGs. The theory, hardware design, software implementation on a personal computer, and experimental reconstruction of clinical ECGs based on the model are discussed.
基于调制并行心律的数学模型及相关方程，开发了一种基于个人计算机的心律失常发生器。使用非线性差分方程组生成包含正常以及异位QRS波的心电图RR间期时间序列。根据计算出的RR间期和QRS波类型合成心电图波形，并通过数模转换器实时输出。通过选择少量模型参数的值，生成了各种类型的伴有室性早搏的心电图以及那些具有很长周期的心电图。该方法既不需要大容量随机存取存储器，也不需要外部存储器来存储心律失常心电图库。讨论了该模型的理论、硬件设计、在个人计算机上的软件实现以及临床心电图的实验重建。
