System and method for monitoring autonomic balance and physical activity
First Claim
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1. An implantable device comprising:
- an autonomic tone sensor to provide a tone signal as a function of a sympathetic nervous system and as a function of a parasympathetic nervous system for a predetermined period of time;
an activity sensor to provide an activity signal as a function of physical activity corresponding to the predetermined period; and
an information processing unit connected to the autonomic tone sensor and connected to the activity sensor and adapted to generate an output signal based upon a relationship between the tone signal and the activity signal, establish a baseline that correlates different tone signals with different activity signals over a predetermined period of time, compare the output signal to the baseline, and classify a patient'"'"'s health status based upon the comparison.
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Abstract
An implantable device monitors the balance between sympathetic tone and parasympathetic tone as a function of an activity level. Cardio-neurological healthy users exhibit a generally sympathetic tone in conjunction with heavy activity level and a generally parasympathetic tone in conjunction with periods of low activity level. Deviations from expected results are associated with a health problem. Measured conditions are stored and available for subsequent reporting to a remote programmer. Therapy delivered by an implantable device is determined as a function of the relationship between autonomic balance and activity level.
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Citations
20 Claims
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1. An implantable device comprising:
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an autonomic tone sensor to provide a tone signal as a function of a sympathetic nervous system and as a function of a parasympathetic nervous system for a predetermined period of time; an activity sensor to provide an activity signal as a function of physical activity corresponding to the predetermined period; and an information processing unit connected to the autonomic tone sensor and connected to the activity sensor and adapted to generate an output signal based upon a relationship between the tone signal and the activity signal, establish a baseline that correlates different tone signals with different activity signals over a predetermined period of time, compare the output signal to the baseline, and classify a patient'"'"'s health status based upon the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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generating an autonomic tone signal as a function of autonomic tone detected during an epoch using an implantable sensor; obtaining an activity signal as a function of physical activity during the epoch; and generating an output signal based upon a relationship between the tone signal and the activity signal, establishing a baseline that correlates different tone signals with different activity signals over a predetermined period of time, comparing the output signal to the baseline, and classifying a patient'"'"'s health status based upon the comparison. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification