Design and implementation of the system architecture for sharing medical information based HL7-CDA among hospitals by the XDS model of IHE

Abstract

Many countries have set the long-term objective for establishing an electronic healthcare records (EHRs). Various IT Strategies note that integration of EHR systems has a high priority. Because the EHR systems are based on different information models and different technology platforms, one of the key integration problems in the realization of the EHRs for the patients’ continuity of care is the inability to share patient records across enterprise. Integrating the healthcare enterprise (IHE) committee has defined the detailed implementations of existing standards such as DICOM, HL7, in a publicly available document called the IHE technical framework (IHE-TF). Cross-enterprise document sharing (XDS), one of IHE technical frameworks, is describing how to apply the standards into the information systems for sharing of medical documents among hospitals. This study aims to design clinical document architecture (CDA) schema based on HL7 and to apply implementation strategies of XDS using this CDA schema.