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Morphology-based discrimination algorithm based on relative amplitude differences and correlation of imprints of energy distribution
Morphology-based discrimination algorithm based on relative amplitude differences and correlation of imprints of energy distribution
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机译:基于相对振幅差和能量分布印记相关性的基于形态的识别算法
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摘要
Techniques for morphologic discrimination between beats of a tachyarrhythmia episode are described for selecting delivery of appropriate therapy. An exemplary method comprises nonordered binning of digitized amplitude values of signals associated with cardiac depolarizations. Monomorphic VT is discriminated from polymorphic VT without signal alignment. One exemplary method involves sensing electrical signals associated with depolarizations of a patient's heart during a tachyarrhythmia episode. The sensed electrical signals are converted to digital values and stored. The stored digital values are normalized and binned. At most, 5 pairs of beats or depolarizations are compared for morphologic similarity by determining the similarity between the binned values associated with each pair. The result of the comparison is used to select and deliver therapy to the patient.
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