ObjectivesTo present the technical background and the development of a procedure that enriches the semantics of Health Level Seven version 2 (HL7v2) messages for software-intensive systems in telemedicine trauma care.MethodsThis study followed a multilevel model-driven approach for the development of semantically interoperable health information systems. The Pre-Hospital Trauma Life Support (PHTLS) ABCDE protocol was adopted as the use case. A prototype application embedded the semantics into an HL7v2 message as an eXtensible Markup Language (XML) file, which was validated against an XML schema that defines constraints on a common reference model. This message was exchanged with a second prototype application, developed on the Mirth middleware, which was also used to parse and validate both the original and the hybrid messages.ResultsBoth versions of the data instance (one pure XML, one embedded in the HL7v2 message) were equally validated and the RDF-based semantics recovered by the receiving side of the prototype from the shared XML schema.ConclusionsThis study demonstrated the semantic enrichment of HL7v2 messages for intensive-software telemedicine systems for trauma care, by validating components of extracts generated in various computing environments. The adoption of the method proposed in this study ensures the compliance of the HL7v2 standard in Semantic Web technologies.
Resumo Objetivos: Descrever a implementação do Modelo de Referência das especificações Multilevel Healthcare Information Modeling (MLHIM) em tecnologias XML, bem como um conjunto de exemplos de conceitos de saúde gerados a partir do repositório do National Cancer Institute -Common Data Elements. Materiais e Métodos: As especificações MLHIM adotaram XML Schema Definition 1.1 como base para a sua implementação de referência, uma vez que as tecnologias XML são consistentes em todas as plataformas e sistemas operacionais, apresentando ferramentas disponíveis para todas as linguagens de programação convencionais. Resultados: Nas especificações MLHIM, a representação do conhecimento de saúde é definida pelo modelo de domínio, expressa em Concept Constraint Definitions (CCDs), que fornecem a interpretação semântica dos objetos persistidos de acordo com as os tipos genéricos do modelo de referência. O conjunto de CCDs foi a base para a simulação de instâncias de dados semanticamente coerentes, de acordo com validadores XML independentes, persistidos em um banco de dados XML. Conclusão: Este trabalho mostra a viabilidade da adoção de tecnologias XML para a realização da interoperabilidade semântica em cenários reais de saúde, provendo os desenvolvedores de aplicativos com uma quantidade significativa de experiência acumulada e um vasto leque de ferramentas disponíveis.
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