Identifying seizures using heart rate decrease
First Claim
1. A method for detecting a seizure event, the method comprising:
- receiving heart beat data versus time for a patient;
detecting an increase in a heart rate of the patient based on the heart rate data from a baseline heart rate to an elevated heart rate;
detecting a decrease in heart rate from the elevated heart rate;
for a time interval occurring during said decrease in heart rate, determining at least one of a) a rate of change of the decrease in heart rate and b) a rate of change in a rate of decrease in heart rate; and
determining occurrence of a seizure event in response to the rate of change of the decrease in heart rate satisfying a threshold rate.
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Accused Products
Abstract
Methods and systems for detecting a seizure event, including receiving heart beat data versus time for a patient, detecting an increase in the heart rate of a patient from a baseline heart rate to an elevated heart rate, detecting a decrease in heart rate from the elevated heart rate, for a time interval occurring during said decrease in heart rate, determining at least one of a) a rate of decrease in heart rate and b) a rate of change in a rate of decrease in heart rate, and detecting a seizure event in response to determining at least one of a) a rate of decrease in heart rate greater than a threshold rate of decrease, and b) a rate of change in the rate of decrease less than a threshold rate of change in a rate of decrease.
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Citations
20 Claims
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1. A method for detecting a seizure event, the method comprising:
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receiving heart beat data versus time for a patient; detecting an increase in a heart rate of the patient based on the heart rate data from a baseline heart rate to an elevated heart rate; detecting a decrease in heart rate from the elevated heart rate; for a time interval occurring during said decrease in heart rate, determining at least one of a) a rate of change of the decrease in heart rate and b) a rate of change in a rate of decrease in heart rate; and determining occurrence of a seizure event in response to the rate of change of the decrease in heart rate satisfying a threshold rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for detecting a seizure event in a patient, the system comprising:
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one or more processors; and one or more memory units coupled to the one or more processors; the one or more processors configured to; receive data of heart beat versus time for a patient; detect an increase in a heart rate from a baseline heart rate to an elevated heart rate; detect a decrease in heart rate from the elevated heart rate for a time interval occurring during said decrease in heart rate, determine a first average rate of change of decrease in heart rate over a first time interval; determine a second average rate of change of decrease in heart rate over a second time interval, wherein the second time interval is different from the first time interval; and indicate occurrence of detect a seizure event in response to determining at least one of a) that a rate of decrease in heart rate is greater than a threshold rate of decrease, and b) that the rate of change in the rate of decrease is less than a threshold rate of change in a rate of decrease the first average rate of change of decrease in heart rate being within a particular percentage of the second average rate of change of decrease in heart rate. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A computer program product embodied in a computer-operable medium, the computer program product comprising logic instructions, the logic instructions executable to:
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process data of heart rate versus time for a patient to detect an increase in the heart rate of the patient from a baseline heart rate to an elevated heart rate; detect a decrease in heart rate from the elevated heart rate; for a time interval occurring during said decrease in heart rate, determine at least one of a) a rate of decrease in heart rate and b) a rate of change in a rate of decrease in heart rate; and indicate occurrence of a seizure event in response to determining the rate of change in the rate of decrease satisfies a threshold. - View Dependent Claims (17, 18, 19, 20)
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Specification