Architecture for networked electronic patient record systems

There have been two major approaches to the development of networked electr onic patient record (EPR) architecture. One uses object-oriented methodolog ies for constructing the model, which include the GEHR project, Synapses, H L7 RIM and so on. The second approach uses document-oriented methodologies, as applied in examples of HL7 PRA. It is practically beneficial to take th e advantages of both approaches and to add solution technologies for networ k security such as PKI. In recognition of the similarity with electronic co mmerce, a certificate authority as a trusted third party will be organised for establishing networked EPR system. This paper describes a Japanese func tional model that has been developed, and proposes a document-object-orient ed architecture. which is compared with other existing models. (C) 2000 Els evier Science Ireland Ltd. All rights reserved.