Availability of software services for a hospital information system

Area of Science:

• Health Informatics
• Computer Science
• Information Systems Engineering

Background:

• Hospital Information Systems (HISs) are critical for modern healthcare operations, demanding 24/7 service availability.
• The increasing adoption of electronic health records and order-entry systems heightens the need for reliable HIS functionality.
• Traditional host-centered system reliability models are insufficient for today's distributed client-server HIS architectures.

Purpose of the Study:

• To propose structural enhancements for HIS components to ensure continuous software service availability.
• To outline strategies for maintaining essential hospital information services even during partial system failures.
• To improve the overall resilience and dependability of hospital information systems.

Main Methods:

• Recommending a dual-protected network infrastructure using Asynchronous Transfer Mode (ATM).
• Advocating for 'fat clients' with replicated essential data and server-side redundancy or shared database access.
• Emphasizing thorough application software testing, version management, and physical data protection for critical patient information.

Main Results:

• Implementing proposed structural changes significantly enhances software service availability in HIS.
• The strategies address potential failures in network, client, server, and application components.
• Ensures continuous provision of necessary information for hospital operations.

Conclusions:

• A well-structured HIS, considering network, client, server, and application layers, is crucial for high software service availability.
• Redundancy and strategic data management are key to mitigating disruptions in hospital information systems.
• Adopting these design principles leads to a substantial increase in the dependability of HIS operations.