Design TeamStuart Bartow 

Raef Haggag

Mara Hemminger

Chase Ighani

Daniel Lidor

Asthma Management System

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

• 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: – 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

• Dr. Shneiderman, course instructor

• Adam Perer, course teaching assistant

• Usability study participants

• Dr. Scharfstein, professional point-of-contact

• Fellow student project reviewers