A Regional Health Information Exchange System for Stroke Care (Nagoya-RHIE)

In this paper, the overview of Nagoya-RHIE system and technical key points on the implementation are described. For stroke care, collaborative use of clinical information is important and secure IT infrastructure for sharing documents is required. Also, standards are needed for interoperability such as common collaborative pathway for stroke care, common clinical documents for the pathway, common framework for sharing documents and transformation between legacy HIS data and common clinical documents. The Nagoya-RHIE project has tackled those technical challenges of building an EHR system. The system has been developed based on HL7 standards and IHE profiles. However, some of IHE profiles have been enhanced for applying them in the real field. Also, a new approach and tool for creating CDA document from specification and instance value set has been developed. A specification template has about 300 elements and 6 type CDA documents have been automatically generated using the specification template. Their framework and many profiles will be useful for the other EHR projects.