A discriminant-analysis-based suction detection system for rotary blood pumps.
A discriminant-analysis-based suction detection system for rotary blood pumps.
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一种基于判别分析的旋转血泵吸力检测系统。
DOI：
10.1109/iembs.2006.260621
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Antaki,JamesF
中科院分区：
文献类型：
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作者：
Ferreira,Antonio;Chen,Shaohui;Simaan,MarwanA;Boston,JRobert;Antaki,JamesF
介绍了一种用于左心室辅助装置的旋转式血泵抽吸检测系统。该系统可以正确地分类泵的流量模式，判别分析（DA）模型的基础上，结合了几个指标从泵流量信号，使泵的状态的决定。在这种方法中考虑的指数是频率，时间和时间-频率域指数。频域指数检测当抽吸事件发生时泵流量信号的谐波和次谐波能量含量的变化。时域指数基于泵流量的逐拍分析和泵流量的一阶导数来检测泵流量脉动性的变化。时间-频率指数可以跟踪泵流量信号的瞬时频率的标准偏差的变化。这些指数在DA决策系统中组合以生成抽吸警报。所提出的系统已在模拟和在体实验测试，并取得了令人满意的结果
A new suction detection system for rotary blood pumps used in left ventricular assist devices is presented. The system can correctly classify pump flow patterns, based on a discriminant analysis (DA) model that combines several indices derived from the pump flow signal to make a decision about the pump status. The indices considered in this approach are frequency-, time-, and time-frequency-domain indices. The frequency-domain indices detect changes in the harmonic and subharmonic energy content of the pump flow signal when a suction event is occurring. The time-domain indices detect changes in pump flow pulsatility based on a beat-to-beat analysis of the pump flow and first derivative of pump flow. The time-frequency index can track variations in the standard deviation of the instantaneous frequency of the pump flow signal. These indices are combined in a DA decision system to generate a suction alarm. The proposed system has been tested in simulations and in-vivo experimental tests and produced satisfactory results