Using PDAs to Automate Vital signs Acquisition and Storage (UPAVAS) Sponsor: Dr. Paul Harris, GCRC Informatics Director Members: Chris Heath, BME/EE Adam Nagel, CompE Chris Nash, EE Brendan Soar, CompE March 4, 2005 Midterm Spring Presentation

This Presentation Project overview –GCRC background –Solution requirements Selected design approach Demonstration Future work

What is the GCRC? General Clinical Research Center GCRC monitors patients taking experimental medicines and suffering from rare medical conditions Patients’ vital signs are recorded frequently Sponsor D. Paul Harris is Informatics Director, operating and maintaining all servers and data collection systems

Measuring equipment and interfaces Vital signs monitors –DINAMAP Pro 1000 and MPS Select –RS-232 (serial) –Opto-Isolated Adapter GCRC network –802.11b wireless LAN w/ SSID Data server –MySQL server –Web-based front end for researchers

PDA Solution Graffiti, Touch screen PDA SQL Server Dinamap Monitor Serial commands Data User Commands Device Status Data Desktop Link MySQL Commands

PDA Solution, cont. PDA OSBluetooth Bluetooth to Serial Dinamap b To GCRC network To User Interface Local Storage PDA device

NI LABVIEW is the selected design approach Labview obtained from VUSE for free –$300-$500 for GCRC development license Pocket PC support Support for Bluetooth, b, RS232

Serial Communication Triumphs To verify the connection, we had the machine print binary garbage to RS232 Once the settings were correct, we were able to trigger readings and receive messages Successfully triggered measurement and read heart rate

Basic Functional Algorithm

DEMONSTRATION

Getting the data to the MySQL server No compatible MySQL library for PocketPC platform Two workarounds –Use a desktop as a “bridge” Desktop will run a “server” VI that relays acquired data to MySQL server using ODBC This can be done over Bluetooth or x –Use PHP script on GCRC webserver Device can use HTTP protocol to connect, send, and retrieve data Can be accessed by device directly, or by desktop “bridge” above

First Option Use a desktop as a link Advantages –Involves mostly proven components –Simple server VI application due to “data dump” method Disadvantages –Requires modification of solution requirements –PDA must be returned to central location –More complex procedure for users

Second Option Use HTTP to access PHP pages Advantages –In line with original solution requirements –No “data dump” or extra steps required for nurses –Real-time monitoring of study progress Disadvantages –HTTP access library for eMbedded VC++ not yet identified Desktop link a “fallback” if this cannot be found

Role of MySQL Connection Acquired data uploaded to server –Return code to ensure successful submission; Results flagged if not successfully submitted –PHP-based web interface allows real- time monitoring of studies

Gantt Chart

To do list Acquisition component –Add new features –Beta test with nurses Data upload component –Research identified alternatives –Develop library for uploading –Beta test library Field test of solution Develop documentation, presentation materials