SBPM
(Simplified Blood Pressure Monitor)
Team Members:
Vladimir Jeune
 Zalian Za
 Malinda Thomas
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Introduction
Problem
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About 50 million US adults has high blood pressure
Uncontrolled high blood pressure can lead to heart
attack, stroke kidney failure, or heart failure
About 1/3 of those who have high blood pressure do
not know they have it
Usually no symptoms
Early detection and treatment of high hypertension is
critical
White-coat hypertension
Introduction (cont’d)
Requirements:
 Intended to be self sufficient (no other
technical system required)
 However, can be hooked up to a computer
using any operating system
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If hooked up to a computer, need internet
connection to transfer data
Some kind of database program (such as excel) to
view charts and graphs
(Right now, need computer to enter patient
information)
Introduction (cont’d)
Intended Users:
Intended for any patient who is required
to keep a log of blood pressure readings
or just anyone who wants to
 Aimed more towards the elderly (those
with poor vision, minimal technical
knowledge/experience)
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Presentation of Design
Ease of Use and Usability.
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Instructions are understandable but terse. ( So that the user
actually reads them). This respects the users time.
Molding User the Model. The user will know what to expect
because they are told.
Allows user to do what supposed to do, without thinking too much
about it. They are busy people. We want more consistent use for
more solid data.
Allows use of core functionality without manual. Since most
people do not read it.
Allow for collection of pertinent data that can be transported and
manipulated.
Allows Doctor to spot trends in readings, through charts and
graphs.
Presentation of Design (Cont’d)
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Warnings are Helpful and Useful. (Low Battery
Warning,)
 Keeping elder patients in mind, will also have
benefits for other users.
 Balances collecting useful information and the
hassle of obtaining it. Since device is not a
hassle to use, it will be used more often.
 More useful information for Doctor in one
place. Simple diary can give indication of what
is occurring
Presentation of Design (Cont’d)
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Quick Stop button for safety.
High contrast, back lit, color screen. Easier to
see then grey on black LCDs
Can schedule email of results for Doctor.
Data Transfer over wifi. Can also be seen on
computer in most popular Spreadsheet
applications.
1 or 2 person use, save money for couples.
Takes note of Mood and Activity level in user
at time of test.
Presentation of Design (Cont’d)
Useful views of data.
 Malleable data (can manipulate.)
 Use of color and text to reduce memory
load on user.
 4 months for 1 user, 2 months each for
dual users.
 Large, sharp, clear font used throughout,
especially for test results.
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Presentation of Design (Cont’d)
GUI replicates SUI buttons, so no
mistaking what you should do. Reduce
user error.
 Good Sized, sensibly placed, easy to
see and hit buttons.
 Graphs and Charts show good
visuallization(if either is present)
 Buttons have different size and feel for
easier learning, and tactile differentiation.
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Presentation of Design (Cont’d)
Future Work:
Voice for blind users, audible
 Click sounds for GUI Buttons
 Relocation of buttons
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Usability Test
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Five subjects
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Two professionals (59f, 32f)
Three normal users (65m, 21m, 43f)
Task Lists:
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Setup device
Perform normal blood pressure measurements
Add another user
Login as different user and perform normal blood
pressure measurement
Observations and Test Results
Simple initial setup
 Extra user field confusion for single user
 Confusion on Activity/Mood level
selection process
 On-Screen cues hard to notice
 Physical buttons location problem
 Irritation caused by repeated usage of
“enter” button
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Conclusion
Users ranked 8 for simplicity (1 to 9
scale)
 Failed to implement all features we
originally had in our prototypes
 Focused on more important features to
have a working interface
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Acknowledgements
Thanks to:
Dr. Ben Schneiderman for comments
and encouragements.
 Georg Apitz for the resources.
 Nima, Shima, Shiva and Andrew for
awesome critiques
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Questions or Comments?