Asthma Management System
Design Team
Stuart Bartow
Raef Haggag
Mara Hemminger
Chase Ighani
Daniel Lidor
Introduction
• What is Asthma?
– Restricted airways
– Intrinsic vs. extrinsic
– Track via PEF and FEV readings
• (e.g. via Peak Flow meter)
Introduction
• What products exist already?
– Most show personal red/yellow/green zones
– Most chart recent FEV/PEF readings
– Some allow auto-loading of FEV/PEF values; very few
allow both manual and auto-loading of FEV/PEF values
– Few allow data manipulation
– Few are portable
– Few allow users to record/track asthma-attack info
– Few track the presence of current or past triggers (e.g.
pollen counts, temperature, humidity, other personal
triggers)
Introduction
• Goals for AccuLung System
– Provide a mobile resource for tracking asthma symptoms and
history.
– Provide a graphical view of user’s asthma history.
– Track environmental conditions related to asthma triggers.
– Help prevent imminent asthma attacks.
• Application Requirements for AccuLung
– PDA with color display
– Wireless capabilities
– Digital Peak Flow Meter with IR port
Methodology
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Researched existing products; ordered one
Interviewed asthmatics for design ideas
Designers created own designs
Conglomerated all these ideas into one master design
Implemented system
Performed usability tests with asthmatics
Changed design based on feedback
Received critique from professor and fellow classmates
Changed design based on feedback
Created website and project paper
Live Project Tour
Usability Procedure
• Users:
– 4 asthmatics and 5 non-asthmatics
• Tasks:
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Set up a patient profile
Record data from a Peak Expiratory Flow test
Check recent test result trends – graph results - compare
Save History, medications list and other information
View current environmental conditions
• Pollen Count
• Temperature
• Humidity
• Air Quality Index
Usability Findings
• Choose meaningful colors for navigation buttons and
environment readings
• Environment button is hard to locate
• Empty ‘Enter Manually’ input box crashes the system
– Plus designers found some input boxes (FEV, PEF) misleading
• PEF/FEV graph values are too small to read;
– Also add ‘Export’ button to PEF/FEV graph page
• Add ‘personal best’ to home page’s PEF/FEV graph
Choose Meaningful Colors:
Navigation Buttons
Choose Meaningful Colors:
Environment Values
Environment Button Hard to Locate
Empty Input Box Causes Crash
(Plus Designers Found Boxes Misleading)
PEF/FEV Graph Values Too Small;
Add ‘Export’ Button to Graph Page
Add Personal Best to Graph
Future Plans
• Show more values on the same graph as PEF/FEV values:
– Environmental Triggers
– Medications
• Multiple user tracking
• Record asthma triggers
• Develop physician version
Acknowledgments
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Dr. Shneiderman, course instructor
Adam Perer, course teaching assistant
Usability study participants
Dr. Scharfstein, professional point-of-contact
Fellow student project reviewers