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The objective of NLM's Indexing Initiative (IND) is to investigate methods whereby automated indexing methods partially or completely substitute for current indexing practices. The project will be considered a success if methods can be designed and implemented that result in retrieval performance that is equal to or better than the retrieval performance of(More)
T oday's commercial drug information sys­ tems follow a variety of naming conven­ tions. For example, cooperating hospitals might use different systems, and find their data incompatible. Even within a hospital, there might be one system for ordering, another for inventory management, and still another for recording dose adjustments or checking drug(More)
The Unified Medical Language System (UMLS) contains semantic information about terms from various sources, each concept can be understood and located by its relationships to other concepts: this is a result of the organizing principle of semantic locality. We describe a method in which the semantic relationships between concepts are used to map concepts(More)
OBJECTIVE In the 6 years since the National Library of Medicine began monthly releases of RxNorm, RxNorm has become a central resource for communicating about clinical drugs and supporting interoperation between drug vocabularies. MATERIALS AND METHODS Built on the idea of a normalized name for a medication at a given level of abstraction, RxNorm provides(More)
OBJECTIVE The integration of SNOMED CT into the Unified Medical Language System (UMLS) involved the alignment of two views of synonymy that were different because the two vocabulary systems have different intended purposes and editing principles. The UMLS is organized according to one view of synonymy, but its structure also represents all the individual(More)
RxNav 1 is a browser for RxNorm 2 , the NLM repository of standard names for clinical drugs. RxNav displays links from clinical drugs, both branded and generic, to their active ingredients, drug components and related brand names. branded drug forms and 140 dose forms. RxNorm is one of a suite of designated standards for use in U.S. Federal Government(More)
A semantic normal form (SNF) for a clinical drug, designed to represent the meaning of an expression typically seen in a practitioner's medication order, has been developed and is being created in the UMLS Metathesaurus. The long term goal is to establish a relationship for every concept in the Metathesaurus with semantic type "clinical drug" with one or(More)
A record of current medications as well as prior medication history is useful if not vital information to an individual. Such information needs to be easily accessible, yet adequately protected. MyMedicationList is a prototype application developed at the National Library of Medicine that helps users manage their medication lists and make the records(More)
RxNav 1 is a browser for RxNorm 2 , a controlled vocabulary of normalized names for clinical drugs. RxNav displays links from clinical drugs, both branded and generic, to their active ingredients, drug components and related brand names. clinical drug forms, 11,033 branded drug forms and 140 dose forms. RxNorm is one of a suite of designated standards for(More)