1. 4/26/2017
OpenHIE
RHEA Project 2012

2. 4/26/2017
Why do we need an EMPI?
Patient visits multiple separate healthcare providers
Patient known as
John Smith
Patient
Patient known as
John Smythe
Hospital
Patient known as
J. M. Smith
Laboratory
Radiology
ID | John Smith | …
Three entries merged into single record
Enterprise MPI

3. RwandA (RHEA) Disaggregate Data – HL7 Messaging HR Domain
4/26/2017
RwandA (RHEA)
Disaggregate Data – HL7 Messaging
HR Domain
Clinical Domain
Shared Health Record
Client
Registry
Provider Registry
Validation
Health Interoperability Layer
RapidSMS
OpenMRS
HRIS

4. How does the system find patients?
4/26/2017
How does the system find patients?
The system uses a mathematical Algorithm, which uses probability metrics to find medical records.
It Compares records to determine the most accurate medical record for an individual.
Provides multiple passes to prevent errors
Provides a high selectivity factor
Parameters can be defined with broad requirements(delivering more results) or with narrow selection criteria to reduce the amount of records presented.
Reports can be run to allow data cleansing.

5. 4/26/2017
Matching Algorithms
Variety of algorithms available, both deterministic and probabilistic
Fellegi-Sunter is the most popular probabilistic algorithm

6. 4/26/2017
Exchange Workflow

7. Client Registry Architecture
4/26/2017
Client Registry Architecture
Overview of the software architecture of OpenEMPI