HIM 3000 Ch 5 & 6

1. HIM 3000Ch 5 & 6 Essential Concepts for Biomedical Computing & System Design and Engineering in Health Care

2. Computer Architectures • In healthcare, computers used for financial and administrative information. • Ambulatory clinics computer usage

3. Hardware • Servers: computer that shares resources with other computers and supports the activities of many simultaneously within an enterprise • Personal computers: A small, relatively inexpensive, single-user computer. • Workstation: A powerful desktop computer system designed to support a single user.

4. Insert Devices • Mouse • Touch screen • Light pen • Keyboard • Display screen • Output Devices • Display screen • Printers

5. Local Data Communications Communication can occur telephone lines, shared wired, fiber-optic cables, infrared, or radio waves. • Modem: A device used to modulate digital signals for transmission to a remote computer over telephone lines; • Digital signal procession (DSP) chip: A integrated circuit designed for high-speed data manipulation and used in audio communication, image manipulation and data acquisition • Broadband transmission: A data transmission technique in which multiple signals may be transmitted simultaneously, each modulated within an assigned frequency range.

6. Data and system security Privacy: A concept that applies to people, rather than documents, in which there is a presumed right to protect that individual from unauthorized divulging of personal data of any kind Security: The process of protecting information from destruction or misuse, including both physical and computer-based mechanisms. Confidentiality: The ability of data owners and data stewards to control access to, or release of private information.

7. 5 Functions of Security in the health care information system • Availability ensures that accurate and up to date information is available when needed. • Accountability helps to ensure that users are responsible for their access to and use of information based on need to know. • Perimeter definition allows the system to control the boundaries of trusted access to an information system. • Role-limited access enables access for personnel to only that information essential to the performance of their jobs and limits the temptation to access information beyond a legitimate need. • Comprehensibility and control ensures that record owners, data stewards, and patients can understand and have effective control over appropriate aspects of information confidentiality and access.

8. Ch 6 System Design Acquired Programs P 235 Local programs Processing New Data Results External Information Local Storage

9. Functions of Computer System • Data Acquisition & presentation (results) • Record keeping • Communication and integration of information (between caregivers) • Surveillance • Information storage & retrieval (long term EHR) • Data analysis (aid clinicians) • Decision Support • Education

10. Software Lifcycle Waterfall model (p 253) Requirement Analysis specification Design Implementation Testing Maintenance

11. Hospital Information System

12. Designing for Effectiveness • Quality & style of interface • Convenience • Speed and response • Reliability • Speed and response • Security • Integration

13. Group Assignment Case Study pg 243-245

14. From Case study • Analyze where the system is to fit into the existing workflow • Decide what to purchase from a commercial system • Design for the actual customer(s) • Involve those customers throughout the development • Plan for subsequent changes