Identification of false asystole detection
AssigneeMedtronic, Inc.
InventorsYa-Jian Cheng, Jerry D. Reiland
Life of this patent
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Abstract
This disclosure is directed to techniques for identifying false detection of asystole in a cardiac electrogram that include determining whether at least one of a plurality of false asystole detection criteria are satisfied. In some examples, the plurality of false asystole detection criteria includes a first false asystole detection criterion including a reduced amplitude threshold for detecting cardiac depolarizations in the cardiac electrogram, and a second false asystole detection criterion for detecting decaying noise in the cardiac electrogram.
Claims27
A medical system comprising:
- a plurality of electrodes configured to sense a cardiac electrogram of a patient;
- and
- processing circuitry configured to:
- determine that an asystole detection criterion is satisfied based on the cardiac electrogram;
- based on the determination that the asystole detection is satisfied, determine whether a plurality of false asystole detection criteria are satisfied based on the cardiac electrogram signal;
- and
- withhold an indication of an asystole episode for the patient based on a determination that at least one of the plurality of false asystole detection criteria is satisfied,
- wherein the plurality of false asystole detection criteria comprises:
- a first false asystole detection criterion including a reduced amplitude threshold for detecting cardiac depolarizations in the cardiac electrogram;
- and
- a second false asystole detection criterion for detecting decaying noise in the cardiac electrogram.
A method comprising:
- sensing a cardiac electrogram of a patient via a plurality of electrodes of a medical system;
- determining, by processing circuitry of the medical system, that an asystole detection criterion is satisfied based on the cardiac electrogram;
- based on the determination that the asystole detection is satisfied, determining, by the processing circuitry, that at least one of a plurality of false asystole detection criteria are satisfied based on the cardiac electrogram signal;
- and
- withholding, by the processing circuitry, an indication of an asystole episode for the patient based on a determination that at least one of the plurality of false asystole detection criteria is satisfied,
- wherein the plurality of false asystole detection criteria comprises:
- a first false asystole detection criterion including a reduced amplitude threshold for detecting cardiac depolarizations in the cardiac electrogram;
- and
- a second false asystole detection criterion for detecting decaying noise in the cardiac electrogram.
A non-transitory computer-readable storage medium comprising program instructions that, when executed by processing circuitry of a medical system, cause the processing circuitry to:
- determine that an asystole detection criterion is satisfied based on a cardiac electrogram sensed via a plurality of electrodes of the medical system;
- based on the determination that the asystole detection is satisfied, determine whether a plurality of false asystole detection criteria are satisfied based on the cardiac electrogram signal;
- and
- withhold an indication of an asystole episode for the patient based on a determination that at least one of the plurality of false asystole detection criteria is satisfied,
- wherein the plurality of false asystole detection criteria comprises:
- a first false asystole detection criterion including a reduced amplitude threshold for detecting cardiac depolarizations in the cardiac electrogram;
- and
- a second false asystole detection criterion for detecting decaying noise in the cardiac electrogram.
Dependencies are inferred from the claim text.