System and method for testing neural stimulation threshold
First Claim
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1. A method for modulating autonomic balance between parasympathetic tone and sympathetic tone in an autonomic nervous system (ANS), the method comprising:
- stimulating an autonomic neural target to modulate the autonomic balance in the ANS;
performing a neural stimulation threshold test in response to a demand for the neural stimulation threshold test, wherein performing the neural stimulation threshold test includes;
inducing a premature ventricular contraction (PVC) event or detecting an intrinsic PVC event;
detecting pre-PVC heart rate data and post-PVC heart rate data;
measuring heart rate turbulence (HRT) in response to the PVC event using the pre-PVC heart rate data and the post-PVC heart rate data to generate an autonomic balance indicator (ABI); and
using the ABI to determine whether the neural stimulation signal evokes a response above a threshold.
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Abstract
Various system embodiments comprise a neural stimulator, a premature ventricular contraction (PVC) event detector, a heart rate detector, an analyzer, and a controller. The neural stimulator is adapted to generate a stimulation signal adapted to stimulate an autonomic neural target. The analyzer is adapted to, in response to a PVC event signal from the PVC event detector, generate an autonomic balance indicator (ABI) as a function of pre-PVC heart rate data and post-PVC heart rate data. Other aspects and embodiments are provided herein.
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Citations
28 Claims
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1. A method for modulating autonomic balance between parasympathetic tone and sympathetic tone in an autonomic nervous system (ANS), the method comprising:
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stimulating an autonomic neural target to modulate the autonomic balance in the ANS; performing a neural stimulation threshold test in response to a demand for the neural stimulation threshold test, wherein performing the neural stimulation threshold test includes; inducing a premature ventricular contraction (PVC) event or detecting an intrinsic PVC event; detecting pre-PVC heart rate data and post-PVC heart rate data; measuring heart rate turbulence (HRT) in response to the PVC event using the pre-PVC heart rate data and the post-PVC heart rate data to generate an autonomic balance indicator (ABI); and using the ABI to determine whether the neural stimulation signal evokes a response above a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A neural stimulation system to modulate autonomic balance between parasympathetic tone and sympathetic tone in an autonomic nervous system (ANS), the system comprising:
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a neural stimulator configured to stimulate an autonomic neural target to modulate the autonomic balance in the ANS; a premature ventricular contraction (PVC) stimulator configured to induce a PVC using a ventricular pacing pulse; a heart rate detector configured to detect heart both before and after the induced PVC; an analyzer connected to the heart rate detector and configured to measure heart rate turbulence (HRT) using pre-PVC heart rate data and post-PVC heart rate data to generate an autonomic balance indicator (ABI); and a controller configured to; control the neural stimulator to generate a neural stimulation signal to stimulate the autonomic neural target; receive or generate a triggering signal representing a demand for a neural stimulation threshold test; control the PVC stimulator in response to the triggering signal to induce the PVC; and receive the ABI from the analyzer for the induced PVC, wherein the received ABI indicates whether the neural stimulation signal evokes a response above a threshold. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification