Lead integrity testing triggered by sensed asystole
First Claim
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1. A method comprising:
- sensing a cardiac electrogram (EGM) signal of a patient via one or more electrodes on at least one implantable medical lead;
detecting an asystolic EGM signal from the patient, wherein detecting the asystolic EGM signal comprises detecting an absence of a cardiac depolarization in the cardiac EGM signal for at least a threshold time, and the threshold time is at least one second;
initiating a lead integrity test of the at least one implantable medical lead during the asystolic EGM signal in response to detecting the asystolic EGM signal;
detecting a lead-related condition based on the lead integrity test; and
responsive to detecting the lead-related condition, modifying at least one of a sensing configuration and a therapy configuration and/or withholding delivery of therapeutic stimulation.
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Abstract
A method includes sensing a cardiac electrogram (EGM) signal of a patient via one or more electrodes on at least one implantable medical lead. An asystolic EGM signal is detected from the patient, and a lead integrity test of the at least one implantable medical lead is initiated in response to the asystolic EGM signal.
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Citations
18 Claims
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1. A method comprising:
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sensing a cardiac electrogram (EGM) signal of a patient via one or more electrodes on at least one implantable medical lead; detecting an asystolic EGM signal from the patient, wherein detecting the asystolic EGM signal comprises detecting an absence of a cardiac depolarization in the cardiac EGM signal for at least a threshold time, and the threshold time is at least one second; initiating a lead integrity test of the at least one implantable medical lead during the asystolic EGM signal in response to detecting the asystolic EGM signal; detecting a lead-related condition based on the lead integrity test; and responsive to detecting the lead-related condition, modifying at least one of a sensing configuration and a therapy configuration and/or withholding delivery of therapeutic stimulation. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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sensing a cardiac electrogram (EGM) signal of a patient via one or more electrodes on at least one implantable medical lead; detecting an asystolic EGM signal from the patient, wherein detecting the asystolic EGM signal comprises detecting an absence of a cardiac depolarization in the cardiac EGM signal for at least a threshold time, and the threshold time is at least one second; initiating a lead integrity test of the at least one implantable medical lead during the asystolic EGM signal in response to detecting the asystolic EGM signal; detecting a lead-related condition based on the lead integrity test; and at least one of storing the asystolic EGM signal or providing an alert in response to a result of the lead integrity test detecting the lead-related condition.
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8. A system comprising:
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at least one implantable medical lead comprising one or more electrodes; an implantable medical device (IMD) coupled to the at least one lead, wherein the IMD is configured to sense a cardiac electrogram (EGM) signal of a patient via the electrodes; and a processor configured to; detect an asystolic EGM signal based on detecting an absence of a cardiac depolarization in the cardiac EGM for at least a threshold time, wherein the threshold time is at least one second; control the IMD to perform a lead integrity test of the at least one lead in response to detecting the asystolic EGM signal, wherein the processor controls the IMD to perform the integrity test during the asystolic EGM signal; detect a lead-related condition based on the lead integrity test; and responsive to detecting the lead-related condition, control the IMD to at least one of change a sensing configuration, change a therapy configuration, withhold delivery of therapeutic stimulation, and/or generate an alert. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system comprising:
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means for detecting an asystolic cardiac electrogram (EGM) signal of a patient via one or more electrodes on at least one implantable medical lead, wherein sensing the asystolic cardiac EGM signal comprises sensing an absence of cardiac depolarization in the cardiac EGM signal for at least a threshold time, and wherein the threshold time is at least one second; and means for initiating a lead integrity test of the at least one implantable medical lead during the asystolic EGM signal in response to the detection of the asystolic cardiac EGM signal means for detecting a lead-related condition based on the lead integrity test; and responsive to detecting the lead-related condition, means for adjusting operation of the system, wherein the adjusting comprise at least one of changing a sensing configuration, changing a therapy configuration, withholding delivery of therapeutic stimulation, and/or generating an alert.
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Specification