PATIENT MONITORING AND EXCEPTION NOTIFICATION

• US 20130267865A1
• Filed: 12/19/2011
• Published: 10/10/2013
• Est. Priority Date: 12/22/2010
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Shelly, Benjamin Irwin, Kane, Michael Thomas, Matthews, Gregory Delano, Ressler, Heather Dawn, Carter, Duane Howard Jr.
• Granted Patent: US 9,901,287 B2
• Time in Patent Office: Days
• US Class Current: 600/538
• CPC Class Codes: A61B 2505/07 Home care
• CPC Class Codes: A61B 5/0004 characterised by the type of physiological signal transmitted
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/08 Detecting, measuring or recording devices for evaluating the respiratory organs A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/0803 Recording apparatus specially adapted therefor
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: A61B 5/7275 Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/026 specially adapted for predicting, e.g. for determining an information representative of a flow limitation during a ventilation cycle by using a root square technique or a regression analysis
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

A monitoring system is used to measure various parameters of the sleep, respiration, and/or other bodily functions of a subject. One or more metrics are calculated that quantify deviation from the mean, trends, changes over time, and/or other changes in the parameters. The metrics are used to generate notifications of these changes that can be conveyed to caregivers and/or other users.

Claims

1. A method for providing exception notification on behalf of a subject, the method comprising:

recording a plurality of subsequent measurements for a subject of one or more breathing parameters;

determining a first statistical metric of the recorded plurality of subsequent measurements, wherein the first statistical metric corresponds to measurements taken during a first period;

determining a second statistical metric of the recorded plurality of subsequent measurements, wherein the second statistical metric corresponds to measurements taken during a second period, wherein the second period is longer than the first period;

verifying whether the first statistical metric and the second statistical metric warrant a notification on behalf of the subject to the user based on a comparison between the first statistical metric and the second statistical metric; and

conveying the notification on behalf of the subject to the user.

2. The method of claim 1, wherein the first statistical metric is one or more of statistical variability or trend estimation.

3. The method of claim 1, wherein the first statistical metric includes a first standard deviation for a set of measurements measured during the first period spanning less than two weeks, wherein the second statistical metric includes a second standard deviation for a set of measurements measured during the second period spanning more than two weeks, and wherein verifying whether the statistical metric warrants a notification includes comparing the first standard deviation and the second standard deviation.

4. The method of claim 1, wherein the breathing parameters include one or more of an apnea-hypopnea index, a tidal volume, a percentage of breaths taken using assisted respiration, a central apnea index, percentage of time spent in Cheyne-Stokes respiration, average respiration rate, or time spent using assisted respiration.

5. The method of claim 1, wherein the breathing parameters include one or more of an arousal index, average percentage of subject-triggered breaths taken, average pressure support, average peak flow, breathing sounds, or a snore index.

6. A system for providing exception notification on behalf of a subject, the system comprising:

a measurement device configured to measure for a subject one or more breathing parameters;

a user interface configured to exchange information with a user, wherein the information includes notifications;

electronic storage to store measurements from the measurement device; and

a processor configured to execute computer program modules, the computer program modules comprising;

a statistical module configured to determine a first statistical metric and a second statistical metric of the measurements measured by the measurement device, wherein the first statistical metric corresponds to measurements taken during a first period, wherein the second statistical metric corresponds to measurements measured during a second period, wherein the second period is longer than the first period;

a verification module configured to verify whether the determined first and second statistical metrics warrant a notification on behalf of the subject based on a comparison between the first statistical metric and the second statistical metric, and

a user interface module configured to control the user interface to convey the notification on behalf of the subject to the user.

7. The system of claim 6, wherein the first statistical metric determined by the statistical module is one or more of statistical variability or trend estimation.

8. The system of claim 6, wherein the first statistical metric determined by the statistical module includes a first standard deviation for a set of measurements measured during the first period spanning less than two weeks, wherein the second statistical metric determined by the statistical module includes a second standard deviation for a set of measurements measured during the second period spanning more than two weeks, and wherein operation of the verification module is further based on a comparison between the first standard deviation and the second standard deviation.

9. The system of claim 6, wherein the breathing parameters include one or more of an apnea-hypopnea index, a tidal volume, a percentage of breaths taken using assisted respiration, a central apnea index, percentage of time spent in Cheyne-Stokes respiration, average respiration rate, or time spent using assisted respiration.

10. The system of claim 6, wherein the breathing parameters include one or more of an arousal index, average percentage of subject-triggered breaths taken, average pressure support, average peak flow, breathing sounds, or a snore index.

11. A system configured to provide exception notification on behalf of a subject, the system comprising:

means for recording a plurality of subsequent measurements for a subject of one or more breathing parameters;

means for determining a first statistical metric and a second statistical metric of the recorded plurality of subsequent measurements, wherein the first statistical metric corresponds to measurements taken during a first period, wherein the second statistical metric corresponds to measurements measured during a second period, wherein the second period is longer than the first period;

means for verifying whether the first statistical metric and the second statistical metric warrant a notification on behalf of the subject to the user based on a comparison between the first statistical metric and the second statistical metric;

means for conveying the notification on behalf of the subject to the user.

12. The system of claim 11, wherein the first statistical metric is one or more of statistical variability or trend estimation.

13. The system of claim 11, wherein the first statistical metric includes a first standard deviation for a set of measurements measured during the first period spanning less than two weeks, wherein the second statistical metric includes a second standard deviation for a set of measurements measured during the second period spanning more than two weeks, and wherein the operation of the means for verifying whether the statistical metric warrants a notification includes comparing the first standard deviation and the second standard deviation.

14. The system of claim 11, wherein the breathing parameters include one or more of an apnea-hypopnea index, a tidal volume, a percentage of breaths taken using assisted respiration, a central apnea index, percentage of time spent in Cheyne-Stokes respiration, average respiration rate, or time spent using assisted respiration.

15. The system of claim 11, wherein the breathing parameters include one or more of an arousal index, average percentage of subject-triggered breaths taken, average pressure support, average peak flow, breathing sounds, or a snore index.