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Apparatus and method for patient activity estimation and classification

  • US 10,376,184 B2
  • Filed: 03/07/2014
  • Issued: 08/13/2019
  • Est. Priority Date: 03/08/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • sensing, from a patient, an electrical physiologic signal between a single electrode pair;

    obtaining, using detection circuitry, a cardiac signal component from the electrical physiologic signal;

    obtaining, using the detection circuitry, a non-cardiac signal component from the electrical physiologic signal;

    comparing, using a processor, the cardiac and non-cardiac signal components to respective thresholds established for the patient;

    detecting, using the processor, patient activity using the cardiac signal component;

    detecting, using the processor, patient activity using the non-cardiac signal component;

    determining, using the processor, whether the patient activity detected using the cardiac signal component corresponds to voluntary classified activity or involuntary classified activity of the patient and whether the patient activity detected using the non-cardiac signal component corresponds to voluntary classified activity or involuntary classified activity of the patient;

    detecting, using the processor, an adverse patient condition in response to detecting that one of the cardiac and non-cardiac signal components indicates patient voluntary classified activity and the other of the cardiac and non-cardiac signal components indicates patient involuntary classified activity based on the comparison and temporal alignment of the cardiac signal component relative to the non-cardiac signal component; and

    generating, by the processor, an output comprising the cardiac signal component, the non-cardiac signal component, and an indicator of dyssynchrony between the cardiac and non-cardiac signal components indicative of the detected adverse patient condition.

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