Title of presentation - University of Edinburgh
Transcript of Title of presentation - University of Edinburgh
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Speckled Computing
Wireless Health
Interaction Design Case Study
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Centre for Speckled Computing
Case Study: Wireless Health
• Category : Utilitarian
• Requirements: Continuous monitoring, Wearable –
part of a plaster attached to the chest, unobtrusive,
automatic download of data, no recharging – 6 mo
battery life, no on-off switch
• Users: Patients, GP, Nurses, Hospital consultants
• Sensors: 3-D Accelerometer at 12.5 Hz
• Actuators: Visual display on tablet/smart phone
• Data Analysis: Calculate respiratory rate from sensor
data which can vary between 8 to 50 breaths/minute
• Wireless protocol: Bluetooth LE to tablet/phone,
WLAN to server
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Speckled Computing
Identify unmet healthcare needs
Engage with the stakeholders
Create strong evidence base
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Speckled Computing
Unmet Healthcare Need
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Speckled Computing
Managing COPD
• Patients reported symptoms –
unreliable and inaccurate
• Indicators of exacerbation • Increase in breathlessness
• Changes in respiratory rate and breathing pattern
• Reduction in activity
• Pulmonary rehabilitation to reduce
recurrence of exacerbation
Continuous remote monitoring of Respiration and
Activity
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Speckled Computing
Unmet Healthcare Need
• Respiration – one of the four vital signs
monitored in a SEWS chart
• Identify early exacerbation in COPD
• Support pulmonary rehabilitation post
exacerbation
“Monitoring of patients with COPD at home may help
NHS boards avoid costs of £1,000 per patient per year” Source : A Review of Telehealth in Scotland, 2011
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Speckled Computing
COPD Monitoring Service
• Daily reports summarising hourly trends
• Option to access historical data
• Respiratory rate, respiratory effort/flow,
activity
• Remote examination of patient’s
breathing in real-time
• Predictive models for exacerbation
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Speckled Computing
Engagement with stakeholders
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Speckled Computing
Focus Group
Patients, Carers, Hospital Consultants, General
Practitioners, Nurses
• Continuous (24/7) monitoring
• Wearability issues
• No on/off switches
• No battery recharging
• Automatic download of data
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Speckled Computing
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Speckled Computing
Patient-centric design
• Long-term wear
• Light-weight - 17gms (incl. battery)
• Unobtrusive - 4.5 x 3.7 x 1.3 cm
• Battery lifetime - 6 months
• Ease of use & no manual intervention
• No recharging of batteries
• Data stored on wireless patch and downloaded to the
base-station when within range
• Always on
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Speckled Computing
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Speckled Computing
• Specks: miniature devices combine sensing,
processing and wireless networking
• Wireless patch for measuring respiratory rate,
respiratory effort and activity
• Continuous remote monitoring which transmits data
to a secure server via fixed line broadband
connection or 3G cellular network
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Speckled Computing
Personal
Social
Public
Sense – Learn -- Act
Communication
Computation “Intelligence”
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Speckled Computing
Evidence Base
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Speckled Computing
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Speckled Computing
Summary of results of clinical trials at RIE
248 hours of breathing were studied
Successful transmission 94% of the time
119,765 valid cannula breaths
105,416 matched to Orient breaths
Instantaneous respiratory rates agree to within 2BPM
for 86% of matched breaths
Mean absolute difference: 0.6BPM
A reliable measure of respiratory rate was possible in
95.4% of the 5 minute epochs
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Speckled Computing
Oxygen consumption v/s physical activity
minutes
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Speckled Computing
Simultaneous RR/Activity in COPD patient
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Speckled Computing
The Moray Study
• Study use of wireless respiratory and activity
monitoring in a community setting
• Evaluate impact on the stakeholders: patients,
clinicians, nurses, health authority
• Confirm usefulness of data in Primary care setting
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Speckled Computing
- vote -Vote4221713586611
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Speckled Computing
Home Monitoring Data Flow
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Speckled Computing
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Speckled Computing
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Speckled Computing
Respiratory Rate and Activity
Magenta, 24 May - 7 June
0
5
10
15
20
25
30
35
52400 52500 52600 52700 52800 52900 53000 53100 60100 60200 60300 60400 60500 60600 60700
Date and hour
Mean activity level
Rate (BPM)
24 per. Mov. Avg. (Rate (BPM))
24 per. Mov. Avg. (Mean activity level)
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Speckled Computing
DDDDDDDDD
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Speckled Computing
Case Study: Home-based Pulmonary Rehabilitation
Category : Utilitarian
Requirements: Continuous monitoring, Wearable – part
of a plaster attached to the chest, unobtrusive,
automatic download of data, no recharging – 6 mo
battery life, no on-off switch
Users: Patients, GP, Nurses, Hospital consultants
Sensors: 3-D Accelerometer at 12.5 Hz
Actuators: Visual display on tablet/smart phone
Data Analysis: Calculate respiratory rate from sensor
data which can vary between 8 to 50 breaths/minute.
Present trends in changes in RR after exercises.
Wireless protocol: Bluetooth LE to tablet/phone, WLAN
to server
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Speckled Computing
Pulmonary Rehab at Home
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Speckled Computing
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Speckled Computing
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Speckled Computing
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Speckled Computing
Quiet restful breathing between exercises
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Speckled Computing
Breathing rates with activity data
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Speckled Computing
DDDDDDDDD
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Speckled Computing
DDDDDDDDD
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Speckled Computing
DDDDDDDDD
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Speckled Computing
DDDDDDDDD
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Speckled Computing
DDDDDDDDD
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Speckled Computing
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Speckled Computing
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Speckled Computing
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Speckled Computing
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Speckled Computing
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Speckled Computing
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Speckled Computing
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Speckled Computing
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Speckled Computing
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Speckled Computing
Conclusions
• Wearable device + Mobile App
• Patients perform Pulmonary rehab in their homes
• Respiratory and activity monitoring data
• Conformance and validation of exercises
• Monitoring any change in conditions of patients