R Gantenbein IEEE-AMA presentation

Why Centralized Data Banks Won’t Work for Health Information Exchange
Rex E. Gantenbein PhD, Senior Member IEEE
Center for Rural Health Research and Education
University of Wyoming
rex@uwyo.edu
http://www.uwyo.edu/rex/

2
Centralized Data Management
Expensive to maintain
Availability depends on central system
Complex to ensure timely updates
Requires all participants to use compatible EHRs
Alternative is “interface engine”
Requires ID number for all individuals
Complicates interoperability beyond state/region

3
Federated Data Management
“Network of networks”
Cross-state interoperability scales up
Record locator can use public information
Local data is stored locally
Accessed only when needed for exchange
Providers/consumers determine what’s released
Data is as up to date as possible
Failure of a single system doesn’t affect others

Implementing a Federated Model
Web services support a lightweight mechanism for exchanging information
Support distributing information in a variety of formats
Minimize the amount of maintenance to an entity’s interface when others are added
Scale well when new systems are connected
XML is used to describe a class of a data object and behavior of a program
Uses tags to surround the data to define and group data
Readable by both humans and computers

Implementing a Federated Model
Web Service Description Language
Describes the functions available and their interfaces
Describes the parameters that the functions are expecting as well as the return types
File is usually put on a UDDI Directory Server advertising the service
Web service runs on an accessible server
Service accepts a request for information and returns the requested information
Messages are formatted according to the description file

R Gantenbein IEEE-AMA presentation

by Rex Gantenbein

Accessibility

Categories

Upload Details

Usage Rights

Statistics

R Gantenbein IEEE-AMA presentation Presentation Transcript