Method and apparatus for monitoring heart failure patients with cardiopulmonary comorbidities
First Claim
1. A system, comprising:
- an implantable medical device including;
a plurality of sensors adapted to sense a plurality of signals indicative of a plurality of cardiopulmonary conditions including cardiogenic pulmonary edema, obstructive pulmonary disease, and restrictive pulmonary disease;
an implant processor, coupled to the plurality of sensors, to process the plurality of signals; and
an implant telemetry module, coupled to the implant processor, to transmit the processed plurality of signals; and
an external system communicatively coupled to the implantable medical device via telemetry, the external system including;
an external telemetry module to receive the processed plurality of signals; and
an external processor coupled to the external telemetry module, the external processor including a cardiopulmonary condition detector adapted to detect dyspnea based on at least one or more signals of the processed plurality of signals and detect the plurality of cardiopulmonary conditions based on the processed plurality of signals after the dyspnea is detected, the cardiopulmonary condition detector including at least a cardiogenic pulmonary edema detector, an obstructive pulmonary disease detector, and a restrictive pulmonary disease detector.
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Abstract
A system receives signals indicative of cardiopulmonary conditions sensed by a plurality of sensors and provides for monitoring and automated differential diagnosis of the cardiopulmonary conditions based on the signals. Cardiogenic pulmonary edema is detected based on one or more signals sensed by implantable sensors. If the cardiogenic pulmonary edema is not detected, obstructive pulmonary disease and restrictive pulmonary disease are each detected based on a forced vital capacity (FVC) parameter and a forced expiratory volume (FEV) parameter measured from a respiratory signal sensed by an implantable or non-implantable sensor. In one embodiment, an implantable medical device senses signals indicative of the cardiopulmonary conditions, and an external system detects the cardiopulmonary conditions based on these signals by executing an automatic detection algorithm.
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Citations
20 Claims
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1. A system, comprising:
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an implantable medical device including; a plurality of sensors adapted to sense a plurality of signals indicative of a plurality of cardiopulmonary conditions including cardiogenic pulmonary edema, obstructive pulmonary disease, and restrictive pulmonary disease; an implant processor, coupled to the plurality of sensors, to process the plurality of signals; and an implant telemetry module, coupled to the implant processor, to transmit the processed plurality of signals; and an external system communicatively coupled to the implantable medical device via telemetry, the external system including; an external telemetry module to receive the processed plurality of signals; and an external processor coupled to the external telemetry module, the external processor including a cardiopulmonary condition detector adapted to detect dyspnea based on at least one or more signals of the processed plurality of signals and detect the plurality of cardiopulmonary conditions based on the processed plurality of signals after the dyspnea is detected, the cardiopulmonary condition detector including at least a cardiogenic pulmonary edema detector, an obstructive pulmonary disease detector, and a restrictive pulmonary disease detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system, comprising:
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an implantable medical device including; a plurality of sensors adapted to sense a plurality of signals indicative of a plurality of cardiopulmonary conditions, the plurality of sensors including a heart sound sensor to sense a heart sound signal indicative of at least third heart sounds (S3); an implant processor, coupled to the plurality of sensors, to process the plurality of signals, the implant processor including an S3 processor adapted to detect occurrences of S3 and adapted to produce one or more parameters indicative of cardiogenic pulmonary edema based on the detected occurrences of S3; and an implant telemetry module, coupled to the implant processor, to transmit the processed plurality of signals; and an external system communicatively coupled to the implantable medical device via telemetry, the external system including; an external telemetry module to receive the processed plurality of signals; and an external processor coupled to the external telemetry module, the external processor including a cardiopulmonary condition detector adapted to detect the plurality of cardiopulmonary conditions based on the processed plurality of signals, the cardiopulmonary condition detector including at least a cardiogenic pulmonary edema detector, an obstructive pulmonary disease detector, and a restrictive pulmonary disease detector, wherein the cardiogenic pulmonary edema detector is adapted to detect the cardiogenic pulmonary edema based on the one or more parameters indicative of cardiogenic pulmonary edema. - View Dependent Claims (13)
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14. A system, comprising:
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an implantable medical device including; a first sensor adapted to sense a first signal indicative of cardiogenic pulmonary edema; an implant processor, coupled to the sensor, to process the first signal; and an implant telemetry module, coupled to the implant processor, to transmit the processed first signal; an external spirometer adapted to sense a spirometry signal indicative of lung volume; and an external system adapted to be coupled to the external spirometer and communicatively coupled to the implantable medical device via telemetry, the external system including; an external telemetry module to receive the processed first signal; and an external processor coupled to the external telemetry module, the external processor including; a forced vital capacity (FVC) measurement module adapted to measure an FVC parameter from the spirometry signal; a forced expiratory volume (FEV) measurement module adapted to measure an FEV parameter from the spirometry signal; a cardiogenic pulmonary edema detector adapted to detect cardiogenic pulmonary edema based on the processed first signal; an obstructive pulmonary disease detector adapted to detect an obstructive pulmonary disease based on the FVC parameter and the FEV parameter; and and a restrictive pulmonary disease detector adapted to detect a restrictive pulmonary disease based on the FVC parameter and the FEV parameter. - View Dependent Claims (15)
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16. A system, comprising:
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an implantable medical device including; means for sensing a plurality of signals indicative of a plurality of cardiopulmonary conditions, the plurality of signals including one or more signals indicative of dyspnea; means for processing the plurality of signals; and means for transmitting the processed plurality of signals; and an external system adapted to be communicatively coupled to the implantable medical device via telemetry, the external system including; means for receiving the processed plurality of signals; and means for detecting the dyspnea using the processed one or more signals indicative of dyspnea and for detecting at least cardiogenic pulmonary edema, obstructive pulmonary disease, and restrictive pulmonary disease using the processed plurality of signals after the dyspnea is detected. - View Dependent Claims (17, 18, 19, 20)
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Specification