CARDIAC SIGNAL DISPLAY AND EVENT DETECTION USING MULTIRESOLUTION Z-SCORE TRANSFORM
First Claim
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1. A system comprising:
- a medical device including;
a processor adapted to receive sensor data obtained from at least first and second sensors adapted to produce a time-varying physiologic electrical sensor signal, wherein at least one of the first and second sensors is implantable; and
a Z-score transformation (ZST) module included in the processor to calculate a ZST for the sensor data received from the first sensor and a ZST for the sensor data received from the second sensor; and
a display, adapted to display the ZSTs in visual correspondence with each other over time, in communication with the processor.
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Abstract
A system comprising a medical device including a processor and a Z-score transformation (ZST) module. The system also includes a display in communication with the processor. The processor is adapted to receive sensor data obtained from at least first and second sensors adapted to produce a time-varying physiologic electrical sensor signal. At least one of the first and second sensors is implantable. The ZST module calculates a ZST for the sensor data received from the first sensor and a ZST for the sensor data received from the second sensor. The display is adapted to display the ZSTs in visual correspondence with each other over time.
99 Citations
29 Claims
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1. A system comprising:
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a medical device including; a processor adapted to receive sensor data obtained from at least first and second sensors adapted to produce a time-varying physiologic electrical sensor signal, wherein at least one of the first and second sensors is implantable; and a Z-score transformation (ZST) module included in the processor to calculate a ZST for the sensor data received from the first sensor and a ZST for the sensor data received from the second sensor; and a display, adapted to display the ZSTs in visual correspondence with each other over time, in communication with the processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method comprising:
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sensing at least one time-varying physiologic implantable sensor signal; sampling the sensor signal to obtain sensor data; calculating a multi-resolution Z-score transformation (ZST) of the sensor data by; calculating a ZST over a first data segment length of a sensor signal to obtain a first resolution ZST region; and calculating at least a second ZST over a second data segment length of the sensor signal to obtain at least a second resolution ZST region; and displaying a resulting multi-resolution ZST. - View Dependent Claims (18, 19, 20, 21)
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22. A method comprising:
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sensing a first time-varying physiologic sensor signal and sensing at least a second time-varying physiologic sensor signal, wherein at least one of the first and second sensor signals is obtained from an implantable sensor; sampling the first and second sensor signals to obtain sensor data; calculating a Z-score transformation (ZST) of the sensor data of the first sensor signal and a ZST of the sensor data of the second sensor signal; and displaying the ZSTs in visual correspondence with each other over time. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification