Automatic modulation of pacing timing intervals using beat to beat measures
First Claim
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1. A method of delivering pacing therapy to a heart, comprising:
- sensing a physiological exertion level and determining an indicated pacing rate based thereon;
modulating, based on one or more sensed parameters indicative of the physiological exertion level, one or both of an atrioventricular (A-V) timing interval and an atrial (A-A) timing interval for the indicated pacing rate for;
opposing beat-to-beat ventricular (V-V) variability so as to maintain relatively constant V-V intervals between ventricular beats of different cardiac cycles over a plurality of cardiac cycles; and
modulating stroke volumes of the ventricular beats of the plurality of cardiac cycles; and
delivering the pacing therapy using the modulated timing intervals.
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Abstract
Methods and systems to modulate timing intervals for pacing therapy are described. For each cardiac cycle, one or both of an atrioventricular (A-V) timing interval and an atrial (A-A) timing interval are modulated to oppose beat-to-beat ventricular (V-V) timing variability. Pacing therapy is delivered using the modulated timing intervals.
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Citations
20 Claims
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1. A method of delivering pacing therapy to a heart, comprising:
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sensing a physiological exertion level and determining an indicated pacing rate based thereon; modulating, based on one or more sensed parameters indicative of the physiological exertion level, one or both of an atrioventricular (A-V) timing interval and an atrial (A-A) timing interval for the indicated pacing rate for; opposing beat-to-beat ventricular (V-V) variability so as to maintain relatively constant V-V intervals between ventricular beats of different cardiac cycles over a plurality of cardiac cycles; and modulating stroke volumes of the ventricular beats of the plurality of cardiac cycles; and delivering the pacing therapy using the modulated timing intervals. - View Dependent Claims (2, 3, 4, 5)
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6. A method of delivering pacing therapy to a heart, comprising:
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sensing a physiological exertion level and determining an indicated pacing rate based thereon; modulating, based on one or more sensed parameters indicative of the physiological exertion level, one or both of an atrioventricular (A-V) timing interval and an atrial (A-A) timing interval for the indicated pacing rate to increase stroke volumes of ventricular beats of a plurality of cardiac cycles; and delivering the pacing therapy using the modulated timing intervals. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of delivering pacing therapy to a heart, comprising:
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sensing one or more physiological parameters indicative of a physiological exertion level; adjusting, for a plurality of cardiac cycles based on one or more sensed physiological parameters indicative of the physiological exertion level, a pacing rate for one or both of an atrioventricular (A-V) timing interval and an atrial (A-A) timing interval to oppose beat-to-beat ventricular (V-V) variability; producing optimized stroke volumes of the ventricular beats of the plurality of cardiac cycles, the adjusting based on the sensed physiological parameters; and delivering the pacing therapy using the adjusted timing intervals. - View Dependent Claims (17, 18, 19, 20)
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Specification