Elements of information theory
Elements of information theory
Information retrieval on the web
ACM Computing Surveys (CSUR)
Modern Database Management (7th Edition)
Modern Database Management (7th Edition)
Improving web search ranking by incorporating user behavior information
SIGIR '06 Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval
A graph-based approach to auditing RxNorm
Journal of Biomedical Informatics
Artificial Intelligence: A Modern Approach
Artificial Intelligence: A Modern Approach
Building a Standards-Based and Collaborative E-Prescribing Tool MyRxPad
BIBM '09 Proceedings of the 2009 IEEE International Conference on Bioinformatics and Biomedicine
Journal of Biomedical Informatics
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RxNorm was utilized as the basis for direct-capture of medication history data in a live EHR system deployed in a large, multi-state outpatient behavioral healthcare provider in the United States serving over 75,000 distinct patients each year across 130 clinical locations. This tool incorporated auto-complete search functionality for medications and proper dosage identification assistance. The overarching goal was to understand if and how standardized terminologies like RxNorm can be used to support practical computing applications in live EHR systems. We describe the stages of implementation, approaches used to adapt RxNorm's data structure for the intended EHR application, and the challenges faced. We evaluate the implementation using a four-factor framework addressing flexibility, speed, data integrity, and medication coverage. RxNorm proved to be functional for the intended application, given appropriate adaptations to address high-speed input/output (I/O) requirements of a live EHR and the flexibility required for data entry in multiple potential clinical scenarios. Future research around search optimization for medication entry, user profiling, and linking RxNorm to drug classification schemes holds great potential for improving the user experience and utility of medication data in EHRs.