System and method to flag arrhythmia episodes for urgent review
First Claim
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1. A method of flagging monitored ECG samples for urgent review by a human expert, the method comprising:
- continuously monitoring, using an adherent device having at least two electrodes and ECG circuitry, an electro-cardiogram (ECG) signal of the patient;
monitoring, using the adherent device, one or more physiological signals other than the ECG signal, including one or more of bio-impedance signal, respiration signal, body posture signal, and activity level;
detecting, using a local processor module included on the adherent device, a rhythm abnormality in the patient based on the monitored ECG signal;
storing, in a local memory located on the adherent device, an ECG sample associated with the detected rhythm abnormality;
deriving, using the local processor module, one or more first features from the one or more monitored physiological signals, wherein the one or more first features are associated with the stored ECG sample;
determining whether the ECG sample represents a physiological signal based on the one or more first features;
discarding ECG samples that do not represent a physiological signal;
communicating, using wireless communication circuitry located on the adherent device, ECG samples determined to represent a physiological signal to a remote monitoring center;
deriving, at the remote monitoring center, one or more second features associated with the communicated ECG samples;
flagging communicated ECG samples for urgent review based on the one or more second features; and
placing flagged ECG samples in a prioritized queue at the remote monitoring center for out-of-order review by a human expert.
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Abstract
A system and method of flagging monitored ECG samples for urgent review by a human expert is described, and includes monitoring an electro-cardiogram (ECG) signal of the patient with an adherent device that includes a plurality of electrodes. Based on the monitored ECG signal, detected rhythm abnormalities in the patient are detected and ECG samples are collected with respect to detected rhythm abnormalities. One or more features are identified with respect to each ECG sample, and the features are utilized to flag ECG samples for urgent review by a human expert.
30 Citations
11 Claims
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1. A method of flagging monitored ECG samples for urgent review by a human expert, the method comprising:
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continuously monitoring, using an adherent device having at least two electrodes and ECG circuitry, an electro-cardiogram (ECG) signal of the patient; monitoring, using the adherent device, one or more physiological signals other than the ECG signal, including one or more of bio-impedance signal, respiration signal, body posture signal, and activity level; detecting, using a local processor module included on the adherent device, a rhythm abnormality in the patient based on the monitored ECG signal; storing, in a local memory located on the adherent device, an ECG sample associated with the detected rhythm abnormality; deriving, using the local processor module, one or more first features from the one or more monitored physiological signals, wherein the one or more first features are associated with the stored ECG sample; determining whether the ECG sample represents a physiological signal based on the one or more first features; discarding ECG samples that do not represent a physiological signal; communicating, using wireless communication circuitry located on the adherent device, ECG samples determined to represent a physiological signal to a remote monitoring center; deriving, at the remote monitoring center, one or more second features associated with the communicated ECG samples; flagging communicated ECG samples for urgent review based on the one or more second features; and placing flagged ECG samples in a prioritized queue at the remote monitoring center for out-of-order review by a human expert. - View Dependent Claims (2, 3, 4, 5)
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6. A system for flagging monitored ECG samples for urgent review by a human expert, the system comprising:
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an adherent device comprising; a plurality of electrodes; sensing circuitry coupled to the plurality of electrodes for monitoring an electrocardiogram (ECG) signal of a patient to which the adherent device is affixed; at least one of an accelerometer and bioimpedance circuitry configured to monitor one or more physiological signals other than the ECG signal, including one or more of a bio-impedance signal, a respiration signal, a body posture signal, and an activity level; a local processing module configured to receive the monitored ECG signal, wherein the processing module detects rhythm abnormalities in the patient based on the monitored ECG signal and stores an ECG sample associated with detected rhythm abnormalities to a local memory, wherein in response to a detected rhythm abnormality, the local processing module derives one or more first features from the one or more physiological signals and based on the one or more first features determines whether the ECG sample represents a physiological signal, wherein the ECG sample is discarded if determined to be a non-physiologic signal; and wireless communication circuitry configured to communicate ECG samples determined to represent a physiological signal; and a remote monitoring center configured to receive ECG samples communicated from the adherent device, wherein the remote monitoring center derives one or more second features from the ECG samples and determines based on the derived second features whether the ECG sample should be flagged for urgent review, wherein flagged ECG samples are provided to a prioritized queue while non-flagged ECG samples are provided to a normal queue for human review. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification