Patient Monitor Alarm Escalation Visualization
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Solution Overview
Problem
Current monitoring and diagnostic devices suffer from 'alarm fatigue' due to low threshold criteria triggering numerous alarms, leading to important clinical events being overlooked amidst a flood of similar visual representations, which complicates the identification of alarm severity and trends.
Innovation Solution
A monitoring device that uses a display screen to represent physiological parameter values as icons, with dynamic highlighting based on preset criteria, indicating alarm severity by altering the display area's color and visibility, allowing clinicians to assess alarm levels directly within the same display area without additional icons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If low threshold criteria are used to trigger alarms, then alarm sensitivity is improved, but alarm fatigue increases due to excessive number of alarms
Solution Approach 1:
The alarm display is segmented into multiple visual levels (e.g., yellow for warning, red for critical) based on severity. This segmentation allows the system to maintain high alarm sensitivity by triggering alarms at low thresholds while reducing alarm fatigue by visually categorizing and prioritizing alarms, so clinicians can quickly distinguish critical events from less severe warnings.
Solution Approach 2:
Different visual properties (color, intensity, size) are applied to different alarm levels. Critical alarms use high-contrast colors like red with larger display elements, while warning alarms use yellow or orange with smaller elements. This local differentiation allows simultaneous display of multiple alarm levels without creating uniform visual noise that contributes to alarm fatigue.
2Adaptability or versatility
If multiple alarm events are displayed simultaneously, then comprehensive monitoring is improved, but important clinical events are overlooked due to alarm fatigue
Solution Approach 1:
The system uses color changes to encode alarm severity and status. Critical alarms are displayed in red, warnings in yellow, and resolved alarms in green or gray. This color-coding system allows comprehensive monitoring of multiple alarm events while preventing information loss by enabling rapid visual prioritization of critical events amidst numerous alarms.
Solution Approach 2:
The system adds visual dimensions (color, size, position) to differentiate alarm events beyond just the number of alarms. Critical alarms are positioned in prominent locations with larger icons, while less severe alarms are smaller and positioned less prominently. This dimensional differentiation allows comprehensive monitoring without overwhelming the clinician.
3Loss of information
If ancillary display icons are added to show parameter trends, then information completeness is improved, but display space is reduced and information density increases
Solution Approach 1:
The system merges the alarm indicator and trend information into a single integrated display element. Instead of showing separate icons for alarms and separate icons for trends, the alarm icon itself incorporates trend indicators (e.g., upward/downward arrows within the alarm icon). This merging provides complete information while conserving display space and reducing visual clutter.
Solution Approach 2:
Trend information is nested within the alarm icon structure. The alarm icon contains multiple layers of information: the basic alarm symbol, color-coded severity level, and embedded trend indicators. This nesting allows comprehensive information display without increasing the overall footprint on the screen, maintaining information density at manageable levels.
Data Source
AI summary
In the present invention, a monitoring device for providing information on data obtained from sensors operably connected to the device includes a central processing unit configured to receive incoming data signals from a sensor concerning a physiological parameter and to compare the incoming data signals to predetermined alarm criteria for the physiological parameter to determine an alarm condition. The device also includes a display operably connected to the central processing unit and having a display screen with a display area configured to visually represent the incoming data signals concerning the physiological parameter relating to a determined alarm condition on a portion of the display area in a visually distinct manner from a remainder of the display area to visually illustrate an escalation effect.