Methods and devices for monitoring myocardial mechanical stability
First Claim
1. In an implantable system, a method for monitoring myocardial mechanical stability, comprising:
- (a) obtaining a signal that is indicative of mechanical functioning of a patient'"'"'s heart for a plurality of consecutive beats;
(b) determining a metric of the signal for each of the plurality of consecutive beats;
(c) dividing the plurality of consecutive beats into a plurality of sets of N consecutive beats, wherein N is an integer that is at least 2;
(d) determining, for each of the plurality of sets of N consecutive beats, one or more pairwise combination of the metrics for consecutive pairs of beats;
(e) cumulative averaging or cumulative summing corresponding pairwise combinations determined for the plurality of sets of N consecutive beats to thereby produce a plurality of cumulative values; and
(f) monitoring myocardial mechanical stability based on the cumulative values.
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Abstract
Embodiments of the present invention relate to implantable systems, and methods for use therewith, for monitoring myocardial mechanical stability based on a signal that is indicative of mechanical functioning of a patient'"'"'s heart for a plurality of consecutive beats. Certain embodiments use time domain techniques, while other embodiments use frequency domain techniques, to monitor myocardial mechanical stability. In certain embodiments the patient'"'"'s heart is paced using a patterned pacing sequence that repeats every N beats. In other embodiments, the patient'"'"'s heart need not be paced. This abstract is not intended to be a complete description of, or limit the scope of, the invention.
21 Citations
16 Claims
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1. In an implantable system, a method for monitoring myocardial mechanical stability, comprising:
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(a) obtaining a signal that is indicative of mechanical functioning of a patient'"'"'s heart for a plurality of consecutive beats; (b) determining a metric of the signal for each of the plurality of consecutive beats; (c) dividing the plurality of consecutive beats into a plurality of sets of N consecutive beats, wherein N is an integer that is at least 2; (d) determining, for each of the plurality of sets of N consecutive beats, one or more pairwise combination of the metrics for consecutive pairs of beats; (e) cumulative averaging or cumulative summing corresponding pairwise combinations determined for the plurality of sets of N consecutive beats to thereby produce a plurality of cumulative values; and (f) monitoring myocardial mechanical stability based on the cumulative values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An implantable system for monitoring myocardial mechanical stability, comprising:
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one or more sensor configured to obtain a signal that is indicative of mechanical functioning of the patient'"'"'s heart for a plurality of consecutive beats; a measuring means configured to determine a metric of the signal for each of the plurality of consecutive beats; and a controller configured to divide the plurality of consecutive beats into a plurality of sets of N consecutive beats; determine, for each of the plurality of sets of N consecutive beats, one or more pairwise combination of the metrics for consecutive pairs of beats; cumulative average or cumulative sum corresponding pairwise combinations determined for the plurality of sets of N consecutive beats to thereby produce a plurality of cumulative values; and monitor myocardial mechanical stability based on the cumulative values. - View Dependent Claims (14, 15, 16)
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Specification