Cardiac Tachyarrhythmia Therapy Selection Based on Patient Response Information
First Claim
1. A method, comprising:
- storing one or more cardiac signal templates representative of one or more of a patient'"'"'s past tachyarrhythmia episodes, the one or more templates associated in memory with a tachyarrhythmia therapy to treat tachyarrhythmia episodes;
detecting a cardiac waveform;
comparing a particular template of the one or more stored templates with the cardiac waveform for a match;
delivering a tachyarrhythmia therapy associated with the particular template based on the match between the particular template and the cardiac waveform;
determining whether the delivered therapy associated with the particular template was unsatisfactory in terminating a tachyarrhythmia associated with the particular template; and
eliminating the tachyarrhythmia therapy as an option for treating a subsequent tachyarrhythmia episode associated in memory with the particular template if the therapy is determined unsatisfactory.
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Abstract
Cardiac treatment methods and devices providing templates representative of past tachyarrhythmia events, each template associated with a therapy. A cardiac waveform is detected, and if it corresponds to a particular template associated with a previous therapy that was satisfactory in terminating a past event, the previous therapy is delivered again. If unsatisfactory, the previous therapy is eliminated as an option. If, for example, the previous therapy was an antitachycardia pacing therapy unsatisfactory in terminating the past tachyarrhythmia event, delivery of the antitachycardia pacing therapy is eliminated as an option. Instead of ATP therapy, one or more of a cardioversion, defibrillation, or alternate anti-tachycardia pacing therapy may be associated with the particular template. Cardiac waveforms and templates may correspond in terms of one or more of morphology, timing, drug regimen, medication, neural activity, patient activity, hemodynamic status, cardiac tissue impedance, transthoracic impedance, or other information corresponding to the episode.
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Citations
20 Claims
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1. A method, comprising:
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storing one or more cardiac signal templates representative of one or more of a patient'"'"'s past tachyarrhythmia episodes, the one or more templates associated in memory with a tachyarrhythmia therapy to treat tachyarrhythmia episodes; detecting a cardiac waveform; comparing a particular template of the one or more stored templates with the cardiac waveform for a match; delivering a tachyarrhythmia therapy associated with the particular template based on the match between the particular template and the cardiac waveform; determining whether the delivered therapy associated with the particular template was unsatisfactory in terminating a tachyarrhythmia associated with the particular template; and eliminating the tachyarrhythmia therapy as an option for treating a subsequent tachyarrhythmia episode associated in memory with the particular template if the therapy is determined unsatisfactory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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storing one or more cardiac signal templates representative of one or more of a patient'"'"'s past tachyarrhythmia episodes, the one or more templates associated in memory with a tachyarrhythmia therapy to treat tachyarrhythmia episodes; detecting a cardiac waveform; comparing a particular template of the one or more stored templates with the cardiac waveform for a match; delivering a tachyarrhythmia therapy associated with the particular template based on the match between the particular template and the cardiac waveform; determining whether the delivered therapy associated with the particular template was unsatisfactory or satisfactory in terminating a tachyarrhythmia associated with the particular template; and managing the stored signal templates at least by deleting the particular template if the particular template is older than a predetermined age, or the particular template has not matched to a cardiac waveform for a predetermined time, or the particular template has matched to past arrhythmias least frequently relative to other stored templates, or the particular template represents a heart-rate similar to other stored templates. - View Dependent Claims (12)
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13. A cardiac therapy system, comprising:
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a detector arrangement configured to detect a cardiac waveform; therapy delivery circuitry configured to deliver one or more cardiac electrical therapies to treat tachyarrhythmia episodes detected by the detector arrangement; a memory configured to store one or more cardiac signal templates representative of one or more of a patient'"'"'s past tachyarrhythmia episodes, the one or more templates associated in the memory with a tachyarrhythmia therapy to treat tachyarrhythmia episodes; and a processor coupled to the memory, the processor configured to compare a particular template of the one or more stored templates with the cardiac waveform for a match and cooperate with the therapy delivery circuitry to deliver a tachyarrhythmia therapy associated with the particular template based on the match between the particular template and the cardiac waveform, the processor configured to cooperate with the detector arrangement to determine whether the delivered therapy associated with the particular template was unsatisfactory in terminating a tachyarrhythmia associated with the particular template, and the processor configured to eliminate the tachyarrhythmia therapy as an option for treating a subsequent tachyarrhythmia episode associated in the memory with the particular template if the therapy is determined unsatisfactory. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification