Hazard based assessment patterns

• US 9,465,917 B2
• Filed: 05/30/2014
• Issued: 10/11/2016
• Est. Priority Date: 05/30/2014
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Inventors: Soni, Abhishek, Duke, David L.
• Primary Examiner(s): Holmes, Michael B
• Application Number:
  US14/291,446
• Publication Number:
  US 20150347698A1
• Time in Patent Office: 865 Days
• Field of Search: 706/11
• US Class Current: 1/1
• CPC Class Codes: G06F 18/22 Matching criteria, e.g. proximity measures
• CPC Class Codes: G06F 18/23 Clustering techniques
• CPC Class Codes: G06N 5/047 Pattern matching networks; Rete networks
• CPC Class Codes: G16H 10/40 for data related to laboratory analysis, e.g. patient specimen analysis
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment
• CPC Class Codes: G16H 50/80 for detecting, monitoring or modelling epidemics or pandemics, e.g. flu
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

Methods and devices for retrospectively assessing continuous monitoring reference pattern data to determine a risk of a patient glucose level measurement taken in at least one data segment being outside a predetermined range. The methods and devices can include executing an algorithm to compare risk scores derived from reference pattern data in a currently collected data segment with risk scores of previously stored reference pattern data of previously collected data segments for a patient for assessing risk.

Claims

1. A method for retrospectively assessing continuous monitoring reference pattern data to determine a risk of a patient glucose level measurement taken in at least one data segment being outside a predetermined range comprising:

providing;

a physiological data input device for acquiring data of the at least one data segment, wherein the data is in the form of at least one glucose level measurement;

a controller in communication with the physiological data input device for generating a reference pattern from the data;

a memory coupled to the physiological data input device and the controller for storing reference pattern data of the at least one data segment and for storing an algorithm to compute and assign a risk score for the reference pattern data of the at least one data segment and access a database containing previously stored reference pattern data of previously collected data segments with previously assigned risk scores;

a processor in communication with the memory in order to execute the algorithm to compute and to assign the risk score computed for the reference pattern data of the at least one data segment and access the database containing the previously collected data segment reference pattern data with the assigned risk scores;

collecting the data of the at least one data segment;

generating the reference pattern from the data;

storing the reference pattern data;

executing, via the processor, the algorithm to compute and assign the risk score for the reference pattern data of the at least one data segment; and

comparing the risk score to the previously assigned risk scores of the reference pattern data of the previously acquired data segments for a patient for the retrospective assessment of the risk of the patient glucose level measurement taken in the at least one data segment being outside the predetermined range.

2. The method of claim 1 wherein the data segments with the previously assigned risk scores comprise at least two data segments collected on different days from each other and the start of each of the at least two data segments was at different times from each other on each day, respectively, and the comparing the risk score to the previously assigned risk scores comprises comparing the risk score to the previously assigned risk score of each of the at least two data segments.

3. The method of claim 1 wherein the data segments with the previously assigned risk scores include at least two data segments containing the data with different starting glucose levels from each other, and the comparing the risk score to the previously assigned risk scores comprises comparing the risk score to the previously assigned risk score of each of the at least two data segments.

4. The method of claim 1 further comprising determining, via the algorithm, a course of action to increase the probability of decreasing a future risk score for a future data reference pattern of at least one future data segment to a level below the risk score computed for the data reference pattern of the data segment, and wherein the at least one future data segment is at least 24-hours from the time of start of when the data of the at least one data segment was collected.

5. The method of claim 4 further comprising sending, via the processor to a display of a hand-held device, at least one recommendation for a change in meal components for the at least one future data segment to increase the probability of decreasing the future risk score for the future data reference pattern for the at least one future data segment to the level below the risk score computed for the data segment.

6. The method of claim 1 further comprising sending, via the processor, an alert to a display of a hand-held device when the risk score is above a predetermined level.

7. The method of claim 1 further comprising the memory storing the actual data, the time of the data, and the risk score.

8. The method of claim 1 further comprising determining statistical probability for the risk score of going outside the predetermined glucose range and sending, via the processor, the statistical probability to a display of a hand-held device of to the patient.

9. The method of claim 1 further comprising creating a series of ranges for risk scores, and providing an alert to medical personnel if the assigned risk score is within the predetermined range.

10. The method of claim 1 further comprising tagging the data of the data segment at the time of storage, with information as to a daily period of time at which the data is collected, wherein the daily period of time is either before, during, or after a meal, and wherein comparing the risk score to the previously assigned risk scores comprises comparing the risk score of the reference pattern data with the previously assigned risk scores of the previously stored reference pattern data of the previously collected data segments from the same daily period of time as the data segment.

11. The method of claim 1 wherein comparing the risk score of the reference pattern data of the data segment with the previously assigned risk scores of the previously stored reference pattern data of the previously collected data segment comprises comparing at least two of the previously assigned risk scores of the reference pattern data of the previously collected data segments from the same daily period of time as the data segment and determining which has the lowest risk, and sending to the patient, via the processor to a display of a hand-held device, a message containing advice for a change in meal components for a future risk score of a future reference pattern data a future data segment.

12. The method of claim 1 further comprising determining a daily period of time in a 24-hour period of time where the highest risk occurs for a given meal.

13. The method of claim 1 further comprising the processor determining a strategy to lower the risk score for a future reference pattern data for a future data segment, and sending to the user, via the processor to a display of a computer, a recommended course to decrease the risk on the next day for the same daily period of time as the period of time in which the data of the at least one data segment was collected.

14. The method of claim 13 further comprising the patient performing a self-analysis of at least a 24 hour period of time and changing plans for a future meal based at least in part on the risk score of the reference pattern data of the at least one data segment.

15. The method of claim 1 further comprising collecting reference pattern data from at least two segments, and performing, via the processor, a second algorithm, clustering automatically, at least two data segments into groups of clustered segments according to a clustering algorithm, wherein segments of interest are grouped in the group of clustered segments, and wherein a cluster center is based upon a mean of one of the groups of clustered segments, and, present automatically the cluster center on an electronic display of the physiological data input device.

16. The method of claim 1 wherein the assigning the risk score for the reference pattern of the data of the at least one data segment comprises a calculation accounting for glucose rate of change.

20. The method of claim 15 wherein the device is a personal digital assistant (PDA), a mobile phone, or a glucose meter.

17. A method of risk quantification in one or more physiological reference pattern data of a subject to identify potential trouble spots in one or more regions of the reference pattern data where therapy change can be employed by a health care professional, said method comprising:

providing;

a physiological data input device for acquiring data of at least one data segment, wherein the data is in the form of at least one glucose level measurement;

a controller in communication with the physiological data input device to for generating a reference pattern from the data;

a memory coupled to the physiological data input device and the controller for storing reference pattern data of the at least one data segment and for storing an algorithm to compute and assign a risk score for the reference pattern data of the at least one data segment and access a database containing previously stored reference pattern data of previously collected data segments with previously assigned risk scores;

a processor in communication with the memory to execute the algorithm to compute and to assign the risk score computed for the reference pattern data of the at least one data segment and access the database containing the previously collected data segment reference pattern data and the previously assigned risk scores;

collecting, via the physiological data input device, the data in the at least one data segment obtained during continuous monitoring;

generating, via the controller, the reference pattern of the data of the at least one data segment;

storing, via the memory, the reference pattern data of the at least one data segment;

executing, via the processor, the algorithm;

assigning, via the algorithm, the risk score computed for the reference pattern data of the at least one data segment;

accessing, via the algorithm, the database containing the stored reference pattern data with the previously assigned risk scores;

comparing, via the algorithm, the risk score of the collected data of the at least one data segment with the previously assigned risk scores of the database;

identifying, via the algorithm, the data segments stored in the database with the same risk score as the risk score computed for the reference pattern data of the at least one data segment for identification of the potential trouble spots in the one or more regions of the reference pattern data where the therapy change can be employed by the health care professional;

sending the risk score computed for the reference pattern data of the data segment and a list of the identified data segments stored in the database with the same risk score as the risk score to the heath care professional.

18. A device for retrospectively assessing continuous monitoring reference patterns to determine a risk of a patient glucose level measurement taken in at least one data segment being outside a predetermined range comprising:

a physiological data input device for acquiring data of the at least one data segment;

a controller in communication with the physiological data input device to for generating a reference pattern from the data;

a memory coupled to the physiological data input device and the controller for storing the reference pattern data of the at least one data segment; and

a processor in communication with the memory and configured to execute an algorithm, stored in the memory, to assign a risk score computed for the reference pattern data of the at least one data segment and access a database containing stored reference pattern data with previously assigned risk scores to compare the risk score with the previously assigned risk scores and determine a therapy to decrease a future risk score.

19. The device of claim 18 wherein the physiological data input device is a hand-held device.