Identifying seizures using heart data from two or more windows
First Claim
1. A method for characterizing a seizure event of a patient, the method comprising:
- receiving, at an analyzer device, first data during a first time period, the first data corresponding to a first beat sequence of a heart of the patient;
determining, via the analyzer device, a first heart rate (HR) measure for a first window of the first time period based on the first data;
determining, via the analyzer device, a second HR measure for a second window of the first time period based on the first data, wherein the first window of the first time period occurs after the second window of the first time period, and wherein an intermediate window of the first time period spans from an end of the second window to a start of the first window; and
determining, via the analyzer device, whether an onset of the seizure event has occurred based on a ratio of the first HR measure to the second HR measure, a ratio of the second HR measure to the first HR measure, or both, wherein the analyzer device determines the onset of the seizure event without requiring brain activity data to verify the heart rate data.
8 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems for characterizing a seizure event in a patient, including determining a time of beat sequence of the patient'"'"'s heart, determining a first HR measure for a first window, determining a second HR measure for a second window, wherein at least a portion of the first window occurs after the second window, determining at least one HR parameter based upon said first HR measure and said second HR measure, identifying an onset of the seizure event in response to determining that at least one HR parameter crosses an onset threshold, identifying an end of the seizure event in response to determining that at least one HR parameter crosses an offset threshold.
393 Citations
20 Claims
-
1. A method for characterizing a seizure event of a patient, the method comprising:
-
receiving, at an analyzer device, first data during a first time period, the first data corresponding to a first beat sequence of a heart of the patient; determining, via the analyzer device, a first heart rate (HR) measure for a first window of the first time period based on the first data; determining, via the analyzer device, a second HR measure for a second window of the first time period based on the first data, wherein the first window of the first time period occurs after the second window of the first time period, and wherein an intermediate window of the first time period spans from an end of the second window to a start of the first window; and determining, via the analyzer device, whether an onset of the seizure event has occurred based on a ratio of the first HR measure to the second HR measure, a ratio of the second HR measure to the first HR measure, or both, wherein the analyzer device determines the onset of the seizure event without requiring brain activity data to verify the heart rate data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A system for identifying seizures, the system comprising:
-
one or more processors; and one or more memory units coupled to the one or more processors, wherein the one or more memory units comprise instructions executable by the one or more processors to; receive data corresponding to a beat sequence of a heart of a patient during a time period; determine a first heart rate (HR) measure for a first window of the time period based on the data; determine a second HR measure for a second window of the time period based on the data, wherein the first window occurs after the second window, and wherein an intermediate window of the time period spans from an end of the second window to a start of the first window; identify an onset of a seizure event in response to a determination that one of a ratio of the first HR measure to the second HR measure or a ratio of the second HR measure to the first HR measure satisfies an onset threshold associated with the onset of the seizure event, wherein the one or more processors determines the onset of the seizure event without requiring brain activity data to verify the heart rate data; and identify an end of the seizure event. - View Dependent Claims (12, 13)
-
-
14. A non-transitory computer-readable medium comprising instructions executable by a processor to:
-
determine a first heart rate (HR) measure for a first window of a time period based on data, wherein the data corresponds to a beat sequence of a heart of a patient during the time period; determine a second HR measure for a second window of the time period based on the data, wherein the first window occurs after the second window, and wherein an intermediate window of the time period spans from an end of the second window to a start of the first window; determine a ratio based on the first HR measure and the second HR measure; identify an onset of a seizure event in response to a determination that the ratio satisfies an onset threshold, wherein the processor determines the onset of the seizure event without requiring brain activity data to verify the heart rate data; and send information indicative of the onset of the seizure event to an output device. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
Specification