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.
Claims20
A method implemented by a processor for detecting a presence of Cheyne-Stokes respiration from a respiratory signal generated by a respiration sensor, the method comprising:
- accessing respiratory data representative of the respiratory signal;
- assessing the accessed respiratory data to detect apnea and/or hypopnea events;
- evaluating respiratory data directly following the detected events to estimate a jump feature representing a change in the respiratory data, wherein the jump feature is calculated by selecting a first peak of the respiratory data, selecting a second peak at a predetermined ratio of the first peak, and calculating a gradient between the first peak and the second peak;
- detecting an incident of Cheyne-Stokes respiration based on the jump feature;
- 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.
An apparatus for detecting a presence of Cheyne-Stokes respiration from a respiratory signal generated by a respiration sensor, the apparatus comprising:
- a memory for storing respiratory data associated with the respiratory signal;
- and
- a processor, coupled with the memory, the processor being configured to assess the respiratory data to detect apnea and/or hypopnea events;
- evaluate peaks in the respiratory data directly following the detected events to estimate a jump feature representing a change in the respiratory data, wherein the jump feature is calculated by selecting a first peak of the respiratory data, selecting a second peak at a predetermined ratio of the first peak, and calculating a gradient between the first peak and the second peak;
- detect an incident of Cheyne-Stokes respiration based on the jump feature;
- and
- generate a response to the detection of an incident of Cheyne-Stokes respiration, the response comprising an adjustment to therapeutic pressure delivered by a respiratory treatment apparatus.
Dependencies are inferred from the claim text.