Method for automatic setting time varying parameter alert and alarm limits

Patent metadata

Field	Value
Publication number	US-9445764-B2
Application number	US-201013383736-A
Country	US
Kind code	B2
Filing date	Jun 15, 2010
Priority date	Jul 15, 2009
Publication date	Sep 20, 2016
Grant date	Sep 20, 2016

Abstract

When monitoring physiological parameters (e.g., blood pressure, heart rate, etc.) of a patient, a threshold limit ( 30 ) is set (e.g., automatically or manually) and the monitored parameter is continuously compared to the threshold limit, which may be constant or may vary with time. An alarm ( 36 ) is triggered if the monitored parameter exceeds the threshold limit at any time, or if the monitored parameter has not reached a target value by the end of a predefined time period by which an administered drug or therapy should have been effective.

First claim

The invention claimed is:

1. A method of providing a time-varying physiological parameter alert, comprising:
monitoring, via one or more sensors, a physiologic parameter, patient data, or clinical information of a patient; and
via a processor programmed to perform the following:
comparing the monitored physiologic parameter, patient data, or clinical information to an initial threshold criteria;
following a drug administration, intervention or therapy administration event, temporarily changing the initial threshold criteria to a worsened condition threshold criteria that permits worsening of the monitored parameter for a duration of an allotted time period and to a post-administration threshold criteria after the allotted time period;
determining whether the drug or therapy administration event is known to impact the monitored parameter by evaluating historical information about patient physiology lab study and alarm history;
during the allotted time period, comparing the monitored parameter to the worsened condition threshold criteria when the drug or therapy administration event is known to impact the monitored parameter;
after the allotted time period, comparing the monitored parameter to the post-administration threshold criteria; and
in response to the monitored parameter violating one or more of the initial threshold criteria, the worsened condition threshold criteria, and the post-administration threshold criteria, triggering an alarm.

2. The method according to claim 1 , wherein the worsened condition threshold criteria is constant.

3. The method according to claim 1 , wherein the worsened condition threshold criteria diminishes to the post-administration target level in a plurality of steps.

4. The method according to claim 1 , wherein the worsened condition threshold criteria is varied with time.

5. The method according to claim 1 , wherein the worsened condition threshold criteria follows a monotonically decreasing or increasing curve, or an exponentially increasing or decreasing time function.

6. The method according to claim 1 , further including:
triggering an alert when the monitored parameter is not improved at the expiration of the allotted time period.

7. The method according to claim 1 , further including determining whether the drug or therapy administration event is known to impact the monitored parameter by evaluating at least one of:
available physiological patient information; and
knowledge of administration or an intervention event that affects patient physiology.

8. The method according to claim 1 , the monitored parameter including at least one of:
ST segment elevation or depression;
blood pressure;
heart rate;
blood-oxygen level;
respiratory rate; and
blood-metabolite level.

9. A non-transitory computer-readable medium carrying software for controlling the processor to configure and perform the method of claim 1 .

10. The method according claim 1 , wherein a notification of the drug administration, intervention or therapy administration event is manually input by a user.

11. The method according claim 1 , where a notification of the drug administration, intervention or therapy administration event is automated.

12. A system that provides a time-varying physiological parameter alert to a user; comprising:
one or more sensors that monitor a physiological parameter of a patient;
a processor programmed to:
receive one or more of patient data, clinical lab data, and monitored data or measurements that describe the physiological parameter;
compare the monitored parameter to an initial threshold criteria;
following a drug administration, intervention or therapy administration event, temporarily change the initial threshold criteria to a worsened condition threshold criteria that permits worsening of the monitored parameter for a duration of an allotted time period and to a post-administration threshold criteria after the allotted time period;
determine whether the drug or therapy administration event is known to impact the monitored parameter by evaluating historical information about patient physiology lab study and alarm history;
during the allotted time period, compare the monitored parameter to the worsened condition threshold criteria when the drug or therapy administration event is known to impact the monitored parameter;
after the allotted time period, compare the monitored parameter to the post-administration threshold criteria; and
in response to the monitored parameter violating one or more of the initial threshold criteria, the worsened condition threshold criteria, and the post-administration threshold criteria, trigger an alarm.

13. The system according to claim 12 , wherein the worsened condition threshold criteria is constant.

14. The system according to claim 12 , wherein the worsened condition threshold criteria diminishes or increases to the post-administration target level in a plurality of steps.

15. The system according to claim 12 , wherein the worsened condition threshold criteria is varied with time.

16. The system according to claim 12 , wherein the worsened condition threshold criteria follows a continuous curve, or an exponentially increasing or decreasing time function.

17. The system according to claim 12 , wherein the processor triggers an alert when the monitored parameter is not improved at the expiration of the allotted time period.

18. The system according to claim 12 , wherein the processor determines whether the drug or therapy administration event is known to impact the monitored parameter by evaluating at least one of:
available physiological patient information; and
knowledge of medicinal administration or an intervention event that affects patient physiology.

19. The system according to claim 12 , the monitored parameter including at least one of:
ST segment elevation or depression;
blood pressure;
heart rate;
blood-oxygen level;
respiratory rate; and
blood-metabolite level.

20. The system according to claim 12 , further including a user interface including:
a display on which monitored parameter information is presented to the user along with threshold limit information; and
an input device by which the user sets at least one threshold limit.

21. The system according claim 12 , wherein a notification of the drug administration, intervention or therapy administration event is manually input by a user.

22. The system according claim 12 , wherein a notification of the drug administration, intervention or therapy administration event is automated.

Assignees

• Gross Brian D
• Wang Jyh-Yun J
• Holland-Moritz Marcus
• Wilm Bernd
• Lange Axel
• Latz Benedikt
• Hubert Volker Manfred
• Tivig Gerhard
• Koninklijke Philips Nv

Inventors

• Gross Brian D
• Wang Jyh-Yun J
• Holland-Moritz Marcus
• Wilm Bernd
• Lange Axel
• Latz Benedikt
• Hubert Volker Manfred
• Tivig Gerhard

Classifications

• A61B5/00

  Measuring for diagnostic purposes (radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00); Identification of persons · CPC title

• G06F19/3487

  Physics · mapped topic

• A61B5/4839 Primary

  combined with drug delivery · CPC title

• A61B5/0452

  Human Necessities · mapped topic

• A61B2560/0276

  Determining malfunction · CPC title