RESPIRATION-SYNCHRONIZED HEART SOUND TRENDING
First Claim
1. A system comprising:
- an implantable medical device, including;
a respiration sensor, configured to sense a respiration signal; and
a heart sound sensor, configured to sense a heart sound signal;
an implantable or external respiration phase detector, coupled to the respiration sensor, configured to detect at least one phase of the respiration signal;
an implantable or external heart sound detector, coupled to the heart sound sensor, configured to detect at least one heart sound of the heart sound signal; and
an implantable or external processor, coupled to the respiration phase detector and the heart sound detector, wherein the processor is configured to automatically produce at least one heart sound trend over at least a portion of at least one respiration cycle using the at least one heart sound, the at least one heart sound trend occurring during a specified at least a portion of at least one phase of the respiration signal.
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Abstract
Respiration-synchronized heart sound trends can be detected using an implantable medical device, including a respiration sensor, a respiration phase detector, a heart sound sensor, a heart sound detector, and a processor. The implantable medical device can also include a cardiac sensor. The respiration-synchronized heart sound trends can include heart sounds occurring during specific phases of a respiration signal, such as inspiration or expiration. The heart sound signal can be gated or the heart sound sensor can be enabled or disabled using the cardiac sensor or the respiration sensor. Further, the heart sound trends can be displayed using an external display, and can provide information about a cardiovascular status using an analysis module, or the analysis module and a blood volume sensor.
137 Citations
33 Claims
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1. A system comprising:
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an implantable medical device, including; a respiration sensor, configured to sense a respiration signal; and a heart sound sensor, configured to sense a heart sound signal; an implantable or external respiration phase detector, coupled to the respiration sensor, configured to detect at least one phase of the respiration signal; an implantable or external heart sound detector, coupled to the heart sound sensor, configured to detect at least one heart sound of the heart sound signal; and an implantable or external processor, coupled to the respiration phase detector and the heart sound detector, wherein the processor is configured to automatically produce at least one heart sound trend over at least a portion of at least one respiration cycle using the at least one heart sound, the at least one heart sound trend occurring during a specified at least a portion of at least one phase of the respiration signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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means for sensing a respiration signal within a body; means for detecting at least one phase of the respiration signal; means for sensing a heart sound signal within the body; means for detecting at least one heart sound of the heart sound signal; and means for automatically producing at least one heart sound trend, over at least a portion of at least one respiration cycle, wherein the at least one heart sound trend is indicative of at least one heart sound occurring during a specified at least a portion of at least one phase of the respiration signal.
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18. A method comprising:
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sensing a respiration signal using an implanted respiration sensor; detecting at least one phase of the respiration signal; sensing a heart sound signal using an implanted heart sound sensor; detecting at least one heart sound of the heart sound signal; and automatically producing at least one heart sound trend, over at least a portion of at least one respiration cycle, wherein the at least one heart sound trend is indicative of at least one heart sound occurring during a specified at least a portion of at least one phase of the respiration signal. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification