Apparatus and method using ATP return cycle length for arrhythmia discrimination
First Claim
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1. An apparatus for discriminating between cardiac events, comprising:
- an input circuit receiving signals indicative of the cardiac events;
a first output circuit generating pulses in response to the received signals; and
a microprocessor determining whether a signal received by the input circuit subsequent to the generated pacing pulses corresponds to a first predetermined cardiac event in response to an elapsed time period (T3) between the generated pulses and the subsequently received signal and a predetermined discrimination threshold (T4).
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Abstract
An apparatus for discriminating between cardiac events that includes an input circuit receiving signals indicative of the cardiac events, a first output circuit generating pulses in response to the received signals, and a microprocessor determining whether a signal received by the input circuit subsequent to the generated pacing pulses corresponds to a predetermined cardiac event in response to an elapsed time period between the generated pulses and the subsequently received signal and a predetermined discrimination threshold.
71 Citations
42 Claims
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1. An apparatus for discriminating between cardiac events, comprising:
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an input circuit receiving signals indicative of the cardiac events;
a first output circuit generating pulses in response to the received signals; and
a microprocessor determining whether a signal received by the input circuit subsequent to the generated pacing pulses corresponds to a first predetermined cardiac event in response to an elapsed time period (T3) between the generated pulses and the subsequently received signal and a predetermined discrimination threshold (T4). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for discriminating between cardiac events, comprising:
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an input circuit receiving signals indicative of the cardiac events;
a first output circuit generating pulses in response to the input circuit receiving consecutive signals, separated by a predetermined time period (T1), corresponding to the rate of a first predetermined cardiac event; and
a microprocessor determining whether a signal received by the input circuit subsequent to the generated pacing pulses corresponds to the first predetermined cardiac event in response to an elapsed time period (T3) between the generated pulses and the subsequently received signal and a predetermined discrimination threshold (T4). - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method of discriminating between cardiac events, comprising:
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receiving signals indicative of the cardiac events;
generating pulses in response to the received signals; and
determining that a signal received by the input circuit subsequent to the generated pacing pulses corresponds to a first predetermined cardiac event in response to an elapsed time period (T3) between the generated pulses and the subsequently received signal and a predetermined discrimination threshold (T4). - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification