Detection of hypovolemia using implantable medical device
First Claim
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1. A system for use in a body having a pulmonary artery, comprising:
- an implantable pulmonary artery pressure (PAP) sensor configured to be mounted on an interior wall of the pulmonary artery and sense a PAP signal indicative of a volume of circulating blood; and
an implantable medical device communicatively coupled to the implantable PAP sensor via a wireless telemetry link, the implantable medical device comprising;
a signal processor adapted to process the PAP signal; and
a hypovolemia detector adapted to produce a diastolic PAP (DPAP) using the processed PAP signal, detect hypovolemia using at least the DPAP, and produce a hypovolemia detection signal indicative of the detection of hypovolemia.
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Abstract
An implantable medical device receives a physiological signal indicative of circulatory blood volume and detects hypovolemia from that physiological signal. In one embodiment, an implantable pulmonary artery pressure (PAP) senses a PAP signal, and the implantable medical device detects hypovolemia from the PAP signal.
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Citations
37 Claims
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1. A system for use in a body having a pulmonary artery, comprising:
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an implantable pulmonary artery pressure (PAP) sensor configured to be mounted on an interior wall of the pulmonary artery and sense a PAP signal indicative of a volume of circulating blood; and an implantable medical device communicatively coupled to the implantable PAP sensor via a wireless telemetry link, the implantable medical device comprising; a signal processor adapted to process the PAP signal; and a hypovolemia detector adapted to produce a diastolic PAP (DPAP) using the processed PAP signal, detect hypovolemia using at least the DPAP, and produce a hypovolemia detection signal indicative of the detection of hypovolemia. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for operating an implantable medical device, the method comprising:
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receiving a pulmonary artery pressure (PAP) signal from an implantable PAP sensor via a wireless telemetry link, the implantable PAP sensor mounted on an interior wall of a pulmonary artery to sense the PAP signal; producing a diastolic PAP (DPAP) using the PAP signal; and detecting hypovolemia using at least the DPAP using the implantable medical device. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification