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Evaluation of drug induced frequency dependent QT-prolongation using a flexible computer-based programmable stimulator

机译:使用基于计算机的灵活可编程刺激器评估药物诱导的频率依赖性QT延长

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The proarrhythmic potential of therapeutic drugs can be evaluated by in-vivo electrophysiological testing using stimulated bradycardias. Since conventional stimulators are limited in the number of bradycardic beats, they cannot be used to evaluate the dynamic change of QT-intervals from the onset of bradycardia until a steady state has been achieved. Therefore, we designed and implemented a computer-based programmable stimulator, that enables complex stimulation protocols. This application was then rested in an experimental guinea-pig model to evaluate the characteristics of droperidol-induced QT-interval prolongation.
机译:治疗药物的心律失常潜力可通过使用刺激性心动过缓的体内电生理测试进行评估。由于常规的刺激器在心动过缓的次数上受到限制,因此它们不能用于评估从心动过缓开始到达到稳定状态的QT间隔的动态变化。因此,我们设计并实现了基于计算机的可编程刺激器,该刺激器可以实现复杂的刺激方案。然后将此应用程序置于实验性豚鼠模型中,以评估氟哌利多诱导的QT间隔延长的特征。

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