Which option is NOT a component of a knowledge-based patient monitoring system?

• A. Data acquisition
• B. Presentation
• C. Coding system
• D. Database

Answer: (C)

In a knowledge-based patient monitoring system, the essential components are data acquisition, which gathers real-time patient data from sensors and devices; a database that stores structured patient information and history; and a presentation layer that displays results, trends, and alerts to clinicians. The element that isn’t part of this core setup is a coding system. A coding system (like ICD or CPT) is used for documenting diagnoses and procedures for billing and administrative purposes, not for the real-time collection, interpretation, or display of patient monitoring data. It doesn’t participate in the data flow, the rule-based reasoning, or the visualization that drives monitoring decisions, so it isn’t considered a component of the knowledge-based monitoring system itself.