Method and device for determination of arrhythmia rate zone thresholds using a probability function
First Claim
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1. A method for detecting cardiac arrhythmia, comprising:
- collecting measured heart rate values;
determining a probability function for heart rate using the collect heart rate values;
selecting one or more heart rate probability values; and
determining one or more rate zone thresholds for arrhythmia rate zones from the probability function based on the one or more probability values.
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Abstract
A probability function for heart rate is determined using collected and measured heart rate values. One or more heart rate probability values are selected. Thresholds for arrhythmia rate zones are determined from the probability function based on the selected probability values. Determining the rate zone thresholds may involve determining a threshold for a lower 15 rate limit and/or determining one or more tachyarrhythmia rate zone thresholds. The number of rate zones may also be determined based on the probability function.
48 Citations
28 Claims
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1. A method for detecting cardiac arrhythmia, comprising:
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collecting measured heart rate values; determining a probability function for heart rate using the collect heart rate values; selecting one or more heart rate probability values; and determining one or more rate zone thresholds for arrhythmia rate zones from the probability function based on the one or more probability values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A cardiac device, comprising:
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sensing circuitry configured to sense cardiac electrical signals; heart rate measurement circuitry coupled to the sensing circuitry and configured to measure heart rate values based on the sensed cardiac electrical signals; a memory buffer configured to store the measured heart rate values; a rate zone processor configured to develop a probability function for heart rate based on the measured heart rate values and to determine at least one rate zone threshold from the probability function based a heart rate probability value. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification