首页> 外文会议>Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International >On-line analysis of cardiac near field signals during electrophysiological experiments with heart preparations
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On-line analysis of cardiac near field signals during electrophysiological experiments with heart preparations

机译:使用心脏制剂的电生理实验过程中对心脏近场信号的在线分析

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Two signal processing algorithms for the on-line analysis of local propagation of activation during electrophysiological in-vitro experiments with heart preparations are presented. The first algorithm computes local velocity and direction of the propagating activation wave. Along with the values, their uncertainties due to noise are given. The second algorithm determines the fractionation index, a quantitative measure to characterize fractionated electrograms. These parameters are expected to provide valuable information for the characterization of the microstructure of the tissue under examination. The implementation of these algorithms in a measurement system allows the on-line monitoring of the resulting parameters in a beat-to-beat manner for heart rates up to 1800 beats per minute. This enables the examination of tachycardia even in fast beating preparations like the mouse heart.
机译:提出了两种信号处理算法,用于在进行心脏准备的体外电生理实验中对激活的局部传播进行在线分析。第一种算法计算传播的激活波的局部速度和方向。连同值一起,给出了由于噪声引起的不确定性。第二种算法确定分级指数,这是表征分级电描记图的定量方法。这些参数有望为表征受检组织的微观结构提供有价值的信息。这些算法在测量系统中的实现允许以逐次跳动的方式在线监测最终参数,以使心率达到每分钟1800次。即使在像老鼠心脏这样的快速跳动制剂中,这也可以检查心动过速。

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