False clinical alarm rate reduction

• US 9,355,214 B2
• Filed: 06/13/2014
• Issued: 05/31/2016
• Est. Priority Date: 03/07/2014
• Status: Active Grant

• Current Assignee: GlobeStar, Inc.
• Original Assignee: Globe Star Incorporated
• Inventors: Frank, Robert Jeff, Wilson, Jason
• Primary Examiner(s): Bugg, George
• Assistant Examiner(s): AKKI, MUNEAR T
• Application Number:
  US14/304,640
• Publication Number:
  US 20150254957A1
• Time in Patent Office: 718 Days
• Field of Search: 340/679, 340/506, 340/508, 340/573.1, 340/12.54, 340/521, 340/500, 340/539.1, 340/815.43, 340/540, 340/517, 340/515, 705/3, 600/509, 601/48, 606 65- 67, 606/202, 607 18- 19
• US Class Current: 1/1
• CPC Class Codes: A61B 5/746 Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms alarms per se G08B
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems

Abstract

A clinical facility communication network connects a notification system to a plurality of patient monitors and to a plurality of clinician communication devices. Each of the patient monitors operate to detect physiological characteristics associated with a patient and to send event messages to the notification system. The notification system operates to receive the event messages and to determine which of the event messages include information of sufficient clinical significance to warrant generating and sending an alarm to a clinician. The event messages that are determine not to include clinically significant information are ignored.

Claims

1. A method for identifying a clinically significant event, comprising:

setting a value in a virtual call point for each of a clinically significant event duration, a clinical event count period and a clinical event count threshold;

receiving at the virtual call point a plurality of clinical events associated with a patient the duration of at least some of which are detected to be less than the value set for the clinically significant event duration, and maintaining a current count of the clinical events having a duration that is less than the value set for the clinically significant event duration; and

determining that the current count of clinical events having a duration that is less than the value set for the clinically significant event duration is equal to the count threshold value prior to the event count period expiring and determining that the patient is experiencing a clinically significant event.

2. The method of claim 1, further comprising the virtual call point deactivating an alarm suspend function that when active operates to prevent the generation of an alarm when the virtual call point detects a clinical event having a duration that is less than the value set for the clinically significant event duration.

3. The method of claim 2, further comprising the virtual call point generating and sending an alarm to a clinician that includes an indication that the patient is experiencing a clinically significant event.

4. The method of claim 1, wherein the clinically significant event duration value defines a minimum period of time that a clinical event is active to be considered clinically significant.

5. The method of claim 1, wherein the event duration value and the clinical event count period value is a predetermined period of time.

6. The method of claim 1, wherein the clinical event count threshold value is an integer value.

7. The method of claim 1, wherein the virtual call point is comprised of one or more virtual call point instances.

8. The method of claim 7, wherein each of the one or more virtual call point instances is comprised of a clinical event detection function, an alarm suspend function, a clinical event counting function and an alarm generation function.

9. The method of claim 1, wherein each one of the plurality of clinical events is received from a patient monitoring device and is comprised of clinical event information relating to the physiological state of a patient.

10. The method of claim 9, wherein the clinical event information is any one or more of a heart rate, blood pressure, respiratory rate, blood oxygen, and body temperature.

11. An event notification system, comprising:

a virtual call point having a clinical event detector, a clinical event counter, and alarm generation logic;

wherein the virtual call point receives a plurality of clinical events associated with a patient, the clinical event detector determining that a least some of the clinical events having a duration that is less than a pre-set clinically significant event duration are not clinically significant and the clinical event counter maintaining a current count of the events that are not clinically significant; and

the alarm generation logic detecting that the current count of clinical events that are not clinically significant is equal to a clinical event threshold value prior to a clinical event count period expiring and determining that the patient is experiencing a clinically significant event.

12. The event notification system of claim 11, further comprising an alarm suspension function that when active operates to prevent the generation of an alarm when the virtual call point detects a clinical event that is not clinically significant.

13. The event notification system of claim 12, further comprising the virtual call point deactivating the alarm suspension function and sending an alarm to a clinician indicating that a clinically significant event is detected.

14. The event notification system of claim 12, wherein the alarm suspension function comprises a clinically significant event duration threshold that is set to a value that defines a minimum period of time that a clinical event is active to be considered clinically significant.

15. The event notification system of claim 14, wherein the value that defines a minimum period of time that a clinical event is active is a predetermined period of time.

16. The event notification system of claim 11, wherein the clinical event threshold value is an integer value.

17. The event notification system of claim 11, wherein the clinical event count period is set to a predetermined period of time value.