Jari Porrasmaa

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Integrating heterogeneous application systems in healthcare is needed to support clinical work, patient-centric care, regional interoperability and utilization of both valuable legacy systems and new technologies. The integration process is quite complicated, and must be supported by flexible integration processes and methods. The integration methods should(More)
Different approaches are available for the integration of existing health information systems (HIS) in integration projects. Within the PlugIT project in Finland, we have found it necessary to design and implement integration in a collaborative, multidisciplinary and open way. In this paper, we use some generic integration models and relate them to the(More)
A strategy and toolset (FixIT) for migrating a specific type of legacy systems--based on the FileMan DBMS of the U.S. Department of Veterans Affairs--to a two-tier client/server and web browser-based architecture was presented in MEDINFO'98. In the current paper we discuss the further migration to a multitier software component architecture. A literature(More)
The role of standards is constantly increasing in health services, electronic health records, and eHealth applications. There are many areas of standardization which affect the healthcare work and health information systems. On a national level, the organization of the development and support for standardization should be a key priority. This paper(More)
Since a patient record is typically a document updated by many users, required to be represented in many different layouts, and transferred from place to place, it is a good candidate to be represented structured and coded using the SGML document standard. The use of the SGML requires that the structure of the document is defined in advance by a Document(More)
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