From WING to MMSA: experiences with the implementation of a distributed HIS

Area of Science:

• Health Informatics
• Computer Science in Medicine
• Hospital Information Systems

Background:

• The transition from host-centered to client-server architectures is a critical evolution in healthcare IT.
• Implementing large-scale Hospital Information Systems (HIS) presents significant technical and organizational challenges.
• The University Hospital of Giessen, Germany, initiated a major HIS overhaul in 1995.

Purpose of the Study:

• To analyze the transition to a client-server HIS at a German university hospital.
• To evaluate the concept and practical realization of the Macintosh Mosaic Software Architecture (MMSA).
• To describe the technical and organizational challenges encountered during HIS implementation.

Main Methods:

• Analysis of the transition process from a host-centered to a client-server HIS.
• Focus on the Macintosh Mosaic Software Architecture (MMSA) as a key component.
• Examination of technical implementation issues and organizational challenges.

Main Results:

• The MMSA now provides over 90% of clinical data entered from wards and operating rooms.
• Successful implementation of a client-server HIS architecture.
• Identification of significant technical and organizational hurdles in managing a large HIS.

Conclusions:

• The MMSA is a cornerstone in the successful transition to a modern HIS.
• The transition required overcoming substantial technical and organizational obstacles.
• Effective daily management of a large HIS is complex and requires addressing multifaceted challenges.