Method and apparatus for detecting and treating heart failure
First Claim
1. A device for monitoring a patient to evaluate a heart failure condition of a patient comprising:
- a patient interface;
a non-invasive sensor to generate a signal associated with a characteristic of patient respiration; and
a processor, coupled with the sensor, the processor configured to control and store a determination of a heart failure condition change indicator based on the signal, compare previously stored and determined values of the indicator from one or more previous treatment sessions and determine a risk of a heart failure decompensation event occurring for the patient based on the comparison, wherein the processor is further configured to trigger a heart failure decompensation risk message based on the comparison.
2 Assignments
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Accused Products
Abstract
Devices and systems provide methods of detecting a heart failure condition of a patient that may be based on one or more respiratory parameters of a patient. In an example embodiment, a monitoring device determines one or more heart failure condition indicators based on a measure of the patient respiratory airflow and/or a measure of treatment pressure. Respiratory parameters such as respiration rate, hypopneas, apneas, Cheyne-Stokes breathing patterns or apnea-hypopnea counts may be compared to thresholds that are selected to represent a change in the condition of a heart failure patient such as an onset of a decompensation event. Results of the comparisons may trigger a pressure treatment change and/or one or more warnings or messages to notify a patient or physician of a pending change to the patient'"'"'s heart failure condition so that the patient may more immediately seek medical attention to treat the heart failure condition.
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Citations
44 Claims
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1. A device for monitoring a patient to evaluate a heart failure condition of a patient comprising:
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a patient interface; a non-invasive sensor to generate a signal associated with a characteristic of patient respiration; and a processor, coupled with the sensor, the processor configured to control and store a determination of a heart failure condition change indicator based on the signal, compare previously stored and determined values of the indicator from one or more previous treatment sessions and determine a risk of a heart failure decompensation event occurring for the patient based on the comparison, wherein the processor is further configured to trigger a heart failure decompensation risk message based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for monitoring a patient to evaluate a heart failure condition of the patient comprising:
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sensor means for non-invasively determining a measure of a respiration characteristic of the patient; respiration analysis means for determining a respiratory parameter based on the measure generated by the sensor means; and analysis means for evaluating at least the respiratory parameter to generate and store a heart failure condition change indicator based on a signal from the sensor means, to compare previously stored and determined values of the indicator from one or more previous treatment sessions and determine a risk of a heart failure decompensation event occurring for the patient based on the comparison, wherein the analysis means is further configured to trigger a heart failure decompensation risk message based on the comparison. - View Dependent Claims (18, 19, 20, 21)
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22. A system for monitoring a patient to evaluate a heart failure condition of a patient comprising:
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a patient interface; a non-invasive flow sensor coupled with the patient interface, the flow sensor to generate a respiratory airflow signal representative of the patient'"'"'s respiratory airflow; and a processor configured to control and store a determination of a heart failure condition change indicator based on data from the respiratory airflow signal, compare previously stored and determined values of the indicator from one or more previous treatment sessions and determine a risk of a heart failure decompensation event occurring for the patient based on the comparison, wherein the processor is further configured to trigger a heart failure decompensation risk message based on the comparison. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. An apparatus for evaluating a heart failure condition of a patient during respiratory pressure treatment comprising:
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a sensor to determine a measure of treatment pressure delivered by a respiratory treatment apparatus; and a processor coupled with the sensor, the processor configured to control a determination of a heart failure condition change indicator based on changes in the measure of pressure over time, the indicator representing information about a change in a heart failure condition of the patient. - View Dependent Claims (37, 38, 39, 40)
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41. A device for monitoring a patient to evaluate a heart failure condition of a patient comprising:
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a patient interface; a non-invasive sensor to generate a signal associated with a characteristic of patient respiration, wherein the non-invasive sensor is an ultrasonic sensing device; a processor, coupled with the sensor, the processor configured to control a determination of a heart failure condition change indicator based on the characteristic of respiration, the indicator representing information about a change in a heart failure condition of the patient, wherein the respiratory parameter is respiratory rate, and wherein the processor is configured to perform a threshold comparison of the respiratory parameter determined by the processor, a result of the comparison triggers a heart failure condition message, and the processor is configured to determine a heart failure condition change indicator based on data determined by the ultrasonic sensing device.
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42. A device for monitoring a patient to evaluate a heart failure condition of a patient comprising:
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a patient interface; a non-invasive sensor to generate a signal associated with a characteristic of patient respiration; a processor, coupled with the sensor, the processor configured to control a determination of a heart failure condition change indicator based on the characteristic of respiration, the indicator representing information about a change in a heart failure condition of the patient, wherein the respiratory parameter is respiratory rate, wherein the processor is configured to perform a threshold comparison of the respiratory parameter determined by the processor, a result of the comparison triggers a heart failure condition message, and the processor is configured to determine a heart failure condition change indicator based on a determined heart-rate variability metric.
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43. A system for monitoring a patient to evaluate a heart failure condition of a patient comprising:
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a patient interface; a non-invasive flow sensor coupled with the patient interface, the flow sensor to generate a respiratory airflow signal representative of the patient'"'"'s respiratory airflow; a processor configured to control a determination of a heart failure condition change indicator based on data from the respiratory airflow signal, the indicator representing information about a change in a heart failure condition of the patient; and an ultrasonic sensing device, wherein the processor is configured to perform a threshold comparison of a respiratory rate parameter determined from the data by the processor, a result of the comparison triggers a heart failure condition message, and the processor is configured to determine a heart failure condition change indicator based on data determined by the ultrasonic sensing device.
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44. A system for monitoring a patient to evaluate a heart failure condition of a patient comprising:
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a patient interface; a non-invasive flow sensor coupled with the patient interface, the flow sensor to generate a respiratory airflow signal representative of the patient'"'"'s respiratory airflow; a processor configured to control a determination of a heart failure condition change indicator based on data from the respiratory airflow signal, the indicator representing information about a change in a heart failure condition of the patient, wherein the processor is configured to perform a threshold comparison of a respiratory rate parameter determined from the data by the processor, a result of the comparison triggers a heart failure condition message, and the processor is configured to determine a heart failure condition change indicator based on a determined heart-rate variability metric.
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Specification