Discrimination of cheyne-stokes breathing patterns
AssigneeResMed Pty Ltd
InventorsJeffrey Peter Armitstead, Dinesh Ramanan
Life of this patent
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Abstract
A method of a processor for detecting a presence of Cheyne-Stokes respiration from a respiration signal includes accessing data representative of a respiration signal. Data is assessed to detect apnea and/or hypopnea events. A cycle length histogram is determined based on the events and an incident of Cheyne-Stokes respiration is detected based on the cycle length histogram.
Claims26
A method implemented by a processor for detecting a presence of Cheyne-Stokes respiration from a respiration signal generated by a respiration sensor, the method comprising:
- accessing data representative of the respiration signal, the accessed data comprising respiratory data;
- assessing the accessed data to detect apnea and/or hypopnea events;
- evaluating the respiratory data directly following the detected events to estimate a shape feature representing a change in the respiratory data;
- generating a cycle length histogram based on the detected events, wherein the cycle length histogram includes a plurality of bins associated with a plurality of cycle lengths, each cycle length of the plurality being determined from the detected apnea and/or hypopnea events;
- detecting an incident of Cheyne-Stokes respiration based on the cycle length histogram and the estimated shape feature, wherein detecting the incident of Cheyne-Stokes respiration comprises calculating power over a combination of bins covering a select set of cycle lengths;
- and
- responding to the detection of an incident of Cheyne-Stokes respiration, the responding comprising
- controlling an adjustment of a therapeutic pressure delivered by a respiratory treatment apparatus.
A method implemented by a processor for detecting a presence of Cheyne-Stokes respiration from a respiration signal generated by a respiration sensor, the method comprising:
- accessing respiratory flow data representative of the respiration signal;
- assessing the accessed respiratory flow data to detect apnea and/or hypopnea events;
- determining a cycle length histogram based on the detected events, wherein the cycle length histogram includes a plurality of bins associated with a plurality of cycle lengths, each cycle length of the plurality being determined from the detected apnea and/or hypopnea events;
- evaluating peaks in the flow data directly following the detected events to estimate a shape feature representing a change in the peaks of the flow data;
- detecting an incident of Cheyne-Stokes respiration based on the cycle length histogram and the shape feature, wherein detecting the incident of Cheyne Stokes respiration comprises calculating power over a combination of bins covering a select set of cycle lengths;
- and
- responding to the detecting of an incident of Cheyne-Stokes respiration, the responding comprising
- controlling an adjustment to a therapeutic pressure delivered by a respiratory treatment apparatus.
Dependencies are inferred from the claim text.