client access point - tcbi.org
TRANSCRIPT
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Probe Request
Probe Response
Authentication Request
Authentication Response
Association Request
Association Response
CLIENT ACCESS POINT
Let’s Get Associated!
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Episodic vs Continuous Wireless Connectivity
Are devices ready for real time?
FDA 510(k) pending
Brian Long, CWNADirector, Field Systems Operations
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Presentation Scope
> Wireless Demands & Challenges in Hospital Environments
> Real-time, continuous Patient Data
> Network Requirements
> Testing Approach
> Real World Results
> Recommendations & Conclusions
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Hospital Wireless Business Case Demands
EPISODIC CONTINUOUS
Voice Waveforms
VideoReal-time, Continuous
Parametric Data
EMR Applications
PCA Drug Library Updates
Real-time Location Systems
Guest Network
Many more!
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“Healthcare: The Most Challenging WiFi Environment?”Marcus Burton, CWNE #78
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Masimo Patient SafetyNet™
Connect patients with caregivers quickly, easily, and accurately
Accurate, reliable
wireless
measurements at
the bedside
Actionable alarm
notification to
qualified
clinicians
Rapid response
initiated only
when needed
Earlier and more
appropriate clinical
intervention
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IT Network Components
> Choice of bedside devices
> Low data rate streaming data
> Hardwired Ethernet (802.3)
> WLAN (802.11b/g/n or a/n)
> Encryption: WEP / WPA / WPA2
> Authentication: PSK / 802.1X
> HP Server
> HP TouchScreen
> Installed in Data Center
> Remote VPN Support
> Supports 80 Bedside Devices
> Supports 4 Separate Clinical
Assignment Stations
> Remote notification choices
> Emergin interface option
> Dedicated or shared
notification devices
> Support IP Phones, Pagers
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Coverage
Latency
Packet Loss
Availability
Clinician Experience
Testing Approach
24h
r N
etw
ork
Perf
orm
an
ce T
est
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Requirements
COVERAGE
• Primary -67dB
• Secondary -72dB
LATENCY
• Wired <30ms
• Wireless <100ms
PACKET LOSS
• < 2% for Total Testing Time
AVAILABILITY
• => 99.9% for Total Testing TimeS
CLINICIAN EXPERIENCE
• Network/Application Disconnect Report
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Initial Wireless Site Survey – Primary Coverage
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Initial Wireless Site Survey – Secondary Coverage
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Network/Application Disconnect ReportIn
str
um
ents
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Wireless Site Survey [Primary]
Network Remediation
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Wireless Site Survey [Secondary] –
Network Remediation
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Network/Application Disconnect ReportIn
str
um
ents
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Dartmouth Study
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Clinically Proven to Help
Clinicians Improve Outcomes
Taenzer A et al. Anesthesiology, 2010.
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Patient SafetyNet Reliability, Patient Compliance,
and Alarm Frequency
Ten month study, covering 36 bed unit, 2,841 patients and
9,978 monitored days and over 1 billion data points
Wireless System Uptime Reliability 99.9995%
Patient Compliance 98.2%
Average Alarms per patient per day 4
Taenzer A et al. Anesthesiology, 2010.
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Patient SafetyNet Paging Protocol
Page Initial
Primary
Esc. Primary
Secondary
Re-Esc.
Primary
Secondary
Supervisor
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Identify Network Business Objectives
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Mitigate Risks w/ ISO-80001 In Mind
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Recommendation – Invest in Wireless Education
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