Arrhythmia detection using hidden regularity to improve specificity
AssigneeUniversity of Washington through its Center for Commercialization
InventorDavid Thor Linker
Life of this patent
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Abstract
A method for identifying a target arrhythmia, for example, atrial fibrillation, with very high specificity includes obtaining heart rhythm data such as EKG data, selecting and analyzing a segment of the data for arrhythmia, if an arrhythmia is found then reanalyzing the segment of data for a hidden regularity that would indicate the data is not the target arrhythmia. If no hidden regularity is found, then identifying the segment as the target arrhythmia.
Claims19
A method for detecting a target arrhythmia in heart rhythm data with high specificity, comprising:
- obtaining heart rhythm data generated by monitoring the activity of a heart with a medical monitoring device;
- selecting a predetermined number of contiguous heart beat intervals from the heart rhythm data as an analysis segment;
- analyzing the analysis segment to identify an irregularity in the heart beat intervals that satisfies a threshold test for arrhythmia;
- if an irregularity that satisfies the threshold test is identified, then reanalyzing the analysis segment to identify any hidden regularity in the heart beat intervals that would indicate absence of the target arrhythmia;
- and
- if the analysis segment was reanalyzed and no hidden regularity was identified, then designating the analysis segment as the target arrhythmia and storing the analysis segment and the designation on a non-transitory computer readable medium.
A method of detecting atrial fibrillation in heart rhythm data from a heart, comprising:
- monitoring the electrical activity of a heart using a wearable detector comprising a plurality of electrodes, a microprocessor in signal communication with the electrodes, and a data storage component to obtain a heart rhythm data set;
- selecting a segment comprising a predetermined number of contiguous heart beat intervals from the heart rhythm data set;
- analyzing the segment of contiguous heart beat intervals to identify any irregularity in the segment of the heart that satisfies a threshold test for arrhythmia;
- if an irregularity is identified in the segment, then reanalyzing the segment to identify any hidden regularity that would indicate the absence of atrial fibrillation;
- and
- if the segment was reanalyzed and no hidden regularity was identified, then designating the segment as atrial fibrillation and storing the segment of the heart rhythm data on the data storage component.
Dependencies are inferred from the claim text.