Ischemia detection
First Claim
1. A system for detecting myocardial ischemia, the system comprising:
- means for generating a first signal indicative of contractile activity of a heart;
means for obtaining a second signal indicative of electrical activity of the heart; and
means for detecting myocardial ischemia based on both the first signal and the second signal.
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Abstract
Techniques for detection and treatment of myocardial ischemia are described that monitor both the electrical and dynamic mechanical activity of the heart to detect and verify the occurrence of myocardial ischemia in a more reliable manner. The occurrence of myocardial ischemia can be detected by monitoring changes in an electrical signal such as an ECG or EGM, and changes in dynamic mechanical activity of the heart. Dynamic mechanical activity can be represented, for example, by a heart acceleration signal or pressure signal. The electrical signal can be obtained from a set of implanted or external electrodes. The heart acceleration signal can be obtained from an accelerometer or pressure sensor deployed within or near the heart. The techniques correlate contractility changes detected by an accelerometer or pressure sensor with changes in the ST electrogram segment detected by the electrodes to increase the reliability of ischemia detection.
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Citations
20 Claims
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1. A system for detecting myocardial ischemia, the system comprising:
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means for generating a first signal indicative of contractile activity of a heart;
means for obtaining a second signal indicative of electrical activity of the heart; and
means for detecting myocardial ischemia based on both the first signal and the second signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computer-readable medium containing instructions to produce a technical effect via at least one computer processor, comprising:
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obtaining a first signal indicative of dynamic mechanical activity of a heart;
obtaining a second signal indicative of electrical activity of the heart; and
detecting a relative degree of an episode of myocardial ischemia based at least in part on both the first signal and the second signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification