SYSTEMS AND METHODS FOR IMPROVED ATRIAL FIBRILLATION (AF) MONITORING
First Claim
1. A method for use with a system that monitors for atrial fibrillation (AF) based on RR interval variability as measured from an electrocardiogram (ECG) signal, the method comprising:
- (a) obtaining an activity threshold;
(b) monitoring patient activity;
(c) determining, based on the monitored patient activity and the activity threshold, when it is likely that AF monitoring based on RR interval variability is adversely affected by patient activity; and
(d) modifying whether and/or how AF monitoring is performed, when it has been determined that it is likely that AF monitoring based on RR interval variability is adversely affected by patient activity.
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Accused Products
Abstract
Methods and systems described herein are especially useful wherein monitoring for atrial fibrillation (AF) is based on RR interval variability as measured from an electrocardiogram (ECG) signal. An activity threshold, which can be patient specific, is obtained. Patient activity is monitored. Based on the monitored patient activity and the activity threshold, there is a determination of when it is likely that AF monitoring based on RR interval variability is adversely affected by patient activity. When it has been determined that it is likely that AF monitoring based on RR interval variability is adversely affected by patient activity, whether and/or how AF monitoring is performed is modified.
53 Citations
25 Claims
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1. A method for use with a system that monitors for atrial fibrillation (AF) based on RR interval variability as measured from an electrocardiogram (ECG) signal, the method comprising:
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(a) obtaining an activity threshold; (b) monitoring patient activity; (c) determining, based on the monitored patient activity and the activity threshold, when it is likely that AF monitoring based on RR interval variability is adversely affected by patient activity; and (d) modifying whether and/or how AF monitoring is performed, when it has been determined that it is likely that AF monitoring based on RR interval variability is adversely affected by patient activity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system, comprising:
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an atrial fibrillation (AF) monitor configured to monitor for AF based on RR interval variability as measured from an ECG signal; memory to store information about detected episodes of AF; at least one sensor configured to monitor patient activity; at least one processor configured to determine, based on the monitored patient activity and an activity threshold, when it is likely that AF monitoring based on RR interval variability is adversely affected by patient activity; and wherein whether to and/or how to monitor for AF is modified, when the at least one processor determines that it is likely that AF monitoring based on RR interval variability is adversely affected by patient activity. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification