Design of a Multi Dimensional Database for the Archimed DataWarehouse.

The Archimed data warehouse project started in 1993 at the Geneva University Hospital. It has progressively integrated seven data marts (or domains of activity) archiving medical data such as Admission/Discharge/Transfer (ADT) data, laboratory results, radiology exams, diagnoses, and procedure codes. The objective of the Archimed data warehouse is to facilitate the access to an integrated and coherent view of patient medical in order to support analytical activities such as medical statistics, clinical studies, retrieval of similar cases and data mining processes.

Finding similar cases within a hospital information system.

Most of the theoretical medical knowledge comes from literature. The knowledge obtained from the vast majority of patients is then lost. The vast majority of patients do not participate in the elaboration of medical knowledge, apart from the lucky few entering a clinical trial or a published case study.

ARCHIMED: a Network of Integrated Information Systems.

ARCHIMED is a Network of Integrated Information Systems (NIIS). This novel concept of hospital information system has a major advantage over the currently used distributed systems. The normalized representation structure of its databases enable its Navigators to reach simultaneously not only the data coming from different hospital departments, laboratories, and other hospital facilities, but also the data from different hospitals associated in the network.

The bridge between administrative and clinical information system.

On one side, physicians are asked to record administrative information, such as activity measurement, case-mix of their specialty, billing, for statistical, legal or reimbursement purposes; and on the other side, they need to gather detailed information about their own patients in terms of clinical evolution, for the day-to-day care of the patients or for clinical research purposes. Many other actors are also involved with these processes, both on the administrative side, such as registration officers, administrators and on the clinical side, nurses and other care providers. Applications have been developed within hospital information systems for capturing and disseminating information according to these specific actors and dedicated purposes.

Happy birthday DIOGENE: a hospital information system born 20 years ago.

Since its birth in 1978, DIOGENE, the Hospital Information System of Geneva University Hospital has been constantly evolving, with a major change in 1995, when migrating from a centralized to an open distributed architecture. Since a few years, the hospital had to face health policy revolution with both economical constraints and opening of the healthcare network. The Hospital Information System DIOGENE plays a significant role by integrating four axes of knowledge medico-economical context for better understanding and influencing resources consumption the whole set of patient reports and documents (reports, encoded summaries, clinical findings, images, lab data, etc.