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首页> 外文会议>32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society >RR-SAP causality in heart transplant recipients
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RR-SAP causality in heart transplant recipients

机译：心脏移植受者的RR-SAP因果关系

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An information domain approach to the assessment of causality was applied to the beat-to-beat variability of heart period and systolic arterial pressure to test the open loop condition along baroreflex in heart transplant recipients. The closed loop between heart period and systolic arterial pressure was detected as open at the level of the baroreflex if systolic arterial pressure is more easily predictable from heart period than vice versa according to a conditional entropy approach. We found that in short-term heart transplant (STHT) recipients (less than 2 years after transplantation) the closed loop between heart period and systolic arterial pressure was open at the level of baroreflex. Baroreflex appeared to be involved in the heart period regulation in long-term heart transplant (LTHT) recipients (more than 2 years after transplantation). The significant linear correlation of causality index on the number of months after transplantation suggests that baroreflex control recovers after transplantation.
机译：一种用于评估因果关系的信息域方法应用于心脏周期的逐次变异和收缩期动脉压，以测试心脏移植受者沿压力感受反射的开环状态。如果根据条件熵方法更容易从心脏周期预测收缩期动脉压（反之亦然），则可以在压力反射级别将心脏周期与收缩期动脉压之间的闭环检测为开放。我们发现，在短期心脏移植（STHT）接受者（移植后不到2年）中，心脏周期与收缩期动脉压之间的闭环在压力感受反射水平开放。 Baroreflex似乎参与了长期心脏移植（LTHT）受者（移植后2年以上）的心脏周期调节。因果关系指数与移植后数月的显着线性相关表明，压力反射控制在移植后恢复。

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