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Experimental Methods for Simultaneous Measurement of Action Potentials and Electrograms in Isolated Heart

机译:同时测量离体心脏动作电位和电描记图的实验方法

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摘要

Monophasic action potential (MAP) can be recorded from the heart surface by optical method based on fluorescence measurement. The motion of isolated heart during experiment caused additional noise in recorded signal. The motion artifact can be eliminated by ratiometric fluorescence emission measurements. This study is based on experiments in which optical MAP measurement is done by single-wavelength and dualwavelength measurement of fluorescence emission. Both recording setups are presented and their advantages and disadvantages are discussed. MAPs recorded by both methods from isolated rabbit hearts perfused according to Langendorff are presented. Simultaneous electrograms (EG) and MAPs recording are analyzed and measurement of velocity of impulse conduction through heart tissue is presented.
机译:可以通过基于荧光测量的光学方法从心脏表面记录单相动作电位(MAP)。实验过程中离体心脏的运动在记录的信号中引起了额外的噪声。可以通过比例荧光发射测量消除运动伪影。这项研究基于实验,其中光学MAP测量是通过荧光发射的单波长和双波长测量来完成的。介绍了两种记录设置,并讨论了它们的优缺点。提出了通过两种方法从按照Langendorff灌注的离体兔心脏中记录的MAP。分析了同时电图(EG)和MAPs记录,并介绍了通过心脏组织的脉冲传导速度的测量。

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