Nursing Informatics

1. Dependability of
Nursing
Informatics
System

2. Dependable System
•Measure of the reliability, integrity and performance of the
system
•As applied to computer is defined as the trustworthiness of a
computing system which allows reliance to be justifiably
placed on the service it delivers
•Collective term used to describe the availability performance
and its influencing factors: reliability performance,
maintainability performance and maintenance support
performance

3. • In nursing informatics, it is the measure of the effectiveness of
the health care delivery, quality of service and quality of care
through the use of health information system.
• Encompasses the reliability, integrity, confidentiality and security
of the data, information and the process.

4. Factors that Affects
Dependability of Systems
•ERROR: discrepancy between actual results and behavior
from expected or the reference condition or expected
performance
•Resulted when an incorrect reading is registered in the
measuring equipment, the measuring device is
malfunctioning unnoticeably, mishandling of data,
incorrect reading of data (honest mistake), the computer
program, the data processes by the computer program
overflows, incorrect processing of tables and indexes
•Since errors are generated from invalid potential impact
of error or the results of the error will not cascade to the
other system

5. Factors that Affects
Dependability of Systems
•FAULT: sometimes due to computer program bug which is
considered a defect in a system
•Presence of fault in HIS may or may not lead to a failure.
•FAILURE: condition in which the system performs
unnecessarily or the function is contrary to its specification or
the expected condition
•An error may not necessarily cause a failure; however, a
persistent fault can have an impact that mitigates a failure
condition