Electrocardiogram signal detection
First Claim
1. A method of filtering a sensed electrocardiogram (ECG), comprising:
- identifying a QRS interval in the sensed ECU;
identifying a PQ interval in the sensed ECG;
identifying an ST interval in the sensed ECU;
filtering the QRS interval using, a first filtering regime to generate a filtered QRS interval;
filtering both the PQ and ST intervals with a second filtering regime to generate filtered PQ and ST intervals; and
combining the filtered QRS interval and the filtered PQ and ST intervals.
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Abstract
Apparatuses and methods for extracting, de-noising, and analyzing electrocardiogram signals. Any of the apparatuses described herein may be implemented as a (or as part of a) computerized system. For example, described herein are apparatuses and methods of using them or performing the methods, for extracting and/or de-noising ECG signals from a starting signal. Also described herein are apparatuses and methods for analyzing an ECG signal, for example, to generate one or more indicators or markers of cardiac fitness, including in particular indicators of atrial fibrillation. Described herein are apparatuses and method for determining if a patient is experiencing a cardiac event, such as an arrhythmia.
455 Citations
23 Claims
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1. A method of filtering a sensed electrocardiogram (ECG), comprising:
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identifying a QRS interval in the sensed ECU; identifying a PQ interval in the sensed ECG; identifying an ST interval in the sensed ECU; filtering the QRS interval using, a first filtering regime to generate a filtered QRS interval; filtering both the PQ and ST intervals with a second filtering regime to generate filtered PQ and ST intervals; and combining the filtered QRS interval and the filtered PQ and ST intervals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification