Automatic modulation of pacing timing intervals using beat to beat measures
First Claim
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1. A cardiac rhythm management device, comprising:
- a sensor system including one or more sensors configured to sense one or more physiological parameters;
a therapy control processor configured to adjust, for each cardiac cycle, an atrioventricular (A-V) timing interval to decrease beat-to-beat ventricular (V-V) variability over a plurality of cardiac cycles based on the sensed physiological parameters so as to maintain relatively constant V-V intervals between ventricular beats of different cardiac cycles over the plurality of cardiac cycles; and
a therapy delivery system configured to deliver pacing to a heart using the adjusted A-V timing interval.
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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.
51 Citations
18 Claims
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1. A cardiac rhythm management device, comprising:
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a sensor system including one or more sensors configured to sense one or more physiological parameters; a therapy control processor configured to adjust, for each cardiac cycle, an atrioventricular (A-V) timing interval to decrease beat-to-beat ventricular (V-V) variability over a plurality of cardiac cycles based on the sensed physiological parameters so as to maintain relatively constant V-V intervals between ventricular beats of different cardiac cycles over the plurality of cardiac cycles; and a therapy delivery system configured to deliver pacing to a heart using the adjusted A-V timing interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A cardiac rhythm management device, comprising:
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a sensor system including sensors configured to sense one or more physiological parameters; pacing rate circuitry configured to determine an indicated pacing rate based on the sensed one or more physiological parameters and to vary the indicated pacing rate to mimic natural respiratory sinus arrhythmia; a therapy control processor configured to independently adjust, for each cardiac cycle, an atrioventricular (A-V) timing interval to decrease beat-to-beat ventricular (V-V) variability over a plurality of cardiac cycles based on the sensed physiological parameters so as to maintain relatively constant V-V intervals between ventricular beats of different cardiac cycles over the plurality of cardiac cycles; and a therapy delivery system configured to deliver pacing to a heart using the adjusted A-V timing interval. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification