System and method for continuously monitoring classified atrial arrhythmias
First Claim
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1. A method of analyzing occurrences of classified atrial arrhythmias, comprising:
- detecting occurrences of classified atrial fibrillation (AF) rhythms;
detecting occurrences of classified supraventricular tachycardia (SVT) rhythms other than atrial fibrillation rhythms;
measuring a duration of time (AF time duration) associated with each of the detected atrial fibrillation rhythms;
measuring a duration of time (SVT time duration) associated with each of the detected SVT rhythms; and
producing trend data with respect to a predetermined period of time using the measured AF and SVT time durations.
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Abstract
Systems and methods are provided for analyzing occurrences of atrial arrhythmias. Occurrences of each of a number of classified atrial arrhythmia rhythms are detected. The classified atrial arrhythmias may, for example, include at least atrial fibrillation and atrial flutter. A duration of time associated with each of the detected atrial arrhythmia rhythms is measured. Trend data is produced with respect to a predetermined period of time using all or selected ones of the measured time durations. The detecting, measuring, and producing processes may also be performed for one or more unclassified atrial arrhythmias.
74 Citations
34 Claims
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1. A method of analyzing occurrences of classified atrial arrhythmias, comprising:
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detecting occurrences of classified atrial fibrillation (AF) rhythms;
detecting occurrences of classified supraventricular tachycardia (SVT) rhythms other than atrial fibrillation rhythms;
measuring a duration of time (AF time duration) associated with each of the detected atrial fibrillation rhythms;
measuring a duration of time (SVT time duration) associated with each of the detected SVT rhythms; and
producing trend data with respect to a predetermined period of time using the measured AF and SVT time durations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
summing the AF time durations to produce a cumulative AF time duration for the predetermined time period; and
summing the SVT time durations to produce a cumulative SVT time duration for the predetermined time period.
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3. The method of claim 2, wherein producing the trend data further comprises:
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computing changes in the cumulative AF time duration as a function of time over the predetermined time period; and
computing changes in the cumulative SVT time duration as a function of time over the predetermined time period.
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4. The method of claim 1, wherein producing the trend data comprises:
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computing, using the AF time durations, a percentage (AF percentage) of the predetermined time period during which the classified AF rhythms were detected; and
computing, using the SVT time durations, a percentage (SVT percentage) of the predetermined time period during which the classified SVT rhythms were detected.
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5. The method of claim 4, further comprising
computing changes in the AF percentage as a function of time over the predetermined time period; - and
computing changes in the SVT percentage as a function of time over the predetermined time period.
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6. The method of claim 1, wherein the predetermined time period comprises a selectively programmable period of time.
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7. The method of claim 1, wherein the predetermined time period comprises a 24 hour time period, a time period based on months or a time period based on years.
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8. The method of claim 1, wherein the predetermined time period comprises a time period between patient analyses.
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9. The method of claim 1, wherein the predetermined time period comprises a time period defined by a life time of a patient.
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10. The method of claim 1, wherein the classified SVT rhythms comprise atrial flutter.
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11. The method of claim 1, wherein the respective detecting, measuring, and producing processes are performed for one or more unclassified atrial arrhythmias.
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12. A body implantable system, comprising:
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a lead system comprising an atrial electrode;
a detector, coupled to the lead system, that senses atrial rhythms;
a first timing circuit that detects occurrences of classified atrial fibrillation (AF) rhythms and measures a duration of time (AF time duration) associated with each of the detected atrial fibrillation rhythms;
a second timing circuit that detects occurrences of classified supraventricular tachycardia (SVT) rhythms other than atrial fibrillation rhythms and measures a duration of time (SVT time duration) associated with each of the detected SVT rhythms; and
a processor communicatively coupled to the detector and the timer circuit, the processor producing trend data with respect to a predetermined period of time using the measured AF and SVT time durations. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of analyzing occurrences of atrial arrhythmias, comprising:
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detecting occurrences of each of a plurality of classified atrial arrhythmia rhythms;
measuring a duration of time associated with each of the detected atrial arrhythmia rhythms; and
producing trend data with respect to a predetermined period of time using all or selected ones of the measured time durations. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification