CHRONICALLY IMPLANTED ABDOMINAL PRESSURE SENSOR FOR CONTINUOUS AMBULATORY ASSESSMENT OF RENAL FUNCTIONS
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Abstract
An implantable system for ambulatory monitoring of a high-risk heart failure patient includes a first pressure sensor implantable within an abdomen of the patient for sensing and generating an output representative of a baseline intra-abdominal pressure value of the patient and for chronically sensing and generating an output representative of an intra-abdominal pressure value of the patient at periodic intervals. At least one second implantable sensor is provided for sensing and generating an output representative of a second physiological parameter of the patient. Additionally, the system includes a processor for correlating the output of the first pressure sensor and the second physiologic sensor, and for comparing differences between the baseline intra-abdominal pressure value and subsequent intra-abdominal pressure values. The processor can reside in another implantable device or in an external device/system.
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Citations
40 Claims
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1-19. -19. (canceled)
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20. A method of monitoring heart functions of a patient, the method comprising:
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measuring a first set of intra-abdominal pressure values of the patient using at least one pressure sensor chronically implanted at least partially within an abdomen of the patient; chronically measuring a plurality of second sets of intra-abdominal pressure values of the patient at periodic intervals using the at least one pressure sensor; remotely transmitting the first and second sets of intra-abdominal pressure values to one or both of an external device and an implant within the patient; comparing the first set of intra-abdominal pressure values to at least one of the plurality of the second sets of intra-abdominal pressure values; and determining if there is a difference between the first set of intra-abdominal pressure values and any one or a plurality of the second sets of intra-abdominal pressure values that exceeds a predetermined threshold value that can be attributed to a renal condition linked to heart function. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method of monitoring heart functions of a patient, the method comprising:
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measuring a plurality of intra-abdominal pressure values of the patient using a first implanted pressure sensor; and determining whether one or more measured intra-abdominal pressure values exceeds a predetermined threshold value indicative of deteriorating heart condition. - View Dependent Claims (35, 36, 37, 38, 39, 40)
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Specification