[Hansa-East Project open architecture for hospital information systems--preliminary report]

Results of implementation of middleware based hospital information system in the National Research Institute of Mother and Child in Warsaw are presented. This was objective of the international information technology (IT) Hansa-East Project dedicated to promotion of UE standards CEN/TC251 ENV 12967-1 for open architecture of hospital information systems. Middleware DHE of the Italian company GESI was used. In the paper, the methodology of middleware based hospital information system is presented, as well as preliminary evaluation.