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ImplementaĆ§Ć£o ESB numa unidade hospitalar. Uso normalizado de mensagens HL7
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Advisor(s)
Abstract(s)
Atualmente, os sistemas de informaĆ§Ć£o hospitalares tĆŖm de possibilitar uma utilizaĆ§Ć£o diferenciada pelos diferentes intervenientes, num cenĆ”rio de constante adaptaĆ§Ć£o e evoluĆ§Ć£o. Para tal, Ć© essencial a interoperabilidade entre os sistemas de informaĆ§Ć£o do hospital e os diversos fornecedores de serviƧos, assim como dispositivos hospitalares.
Apesar da necessidade de suportar uma heterogeneidade entre sistemas ser fundamental, o acesso/troca de informaĆ§Ć£o deve ser feito de uma forma protocolada, segura e transparente.
A infraestrutura de informaĆ§Ć£o mĆ©dica moderna consiste em muitos sistemas heterogĆ©neos, com diversos mecanismos para controlar os dados subjacentes. InformaƧƵes relativas a um Ćŗnico paciente podem estar dispersas por vĆ”rios sistemas (ex: transferĆŖncia de pacientes, readmissĆ£o, mĆŗltiplos tratamentos, etc.). Torna-se evidente a necessidade aceder a dados do paciente de forma consolidada a partir de diferentes locais. Desta forma, Ć© fundamental utilizar uma arquitetura que promova a interoperabilidade entre sistemas.
Para conseguir esta interoperabilidade, podem-se implementar camadas de āmiddlewareā que faƧam a adaptaĆ§Ć£o das trocas de informaĆ§Ć£o entre os sistemas. Todavia, nĆ£o resolvemos o problema subjacente, ou seja, a necessidade de utilizaĆ§Ć£o de um standard para garantir uma interacĆ§Ć£o fiĆ”vel entre cliente/fornecedor. Para tal, Ć© proposto uma soluĆ§Ć£o que passa por um ESB dedicado para a Ć”rea da saĆŗde, denominada por HSB (Healthcare Service Bus).
Entre as normas mais usuais nesta Ć”rea devem-se salientar o HL7 e DICOM, esta Ćŗltima mais especificamente para dispositivos de imagem hospitalar, sendo a primeira utilizada para gestĆ£o e trocas de informaĆ§Ć£o mĆ©dica entre sistemas.
O caso de estudo que serviu de base a esta dissertaĆ§Ć£o Ć© o de um hospital de mĆ©dia dimensĆ£o cujo sistema de informaĆ§Ć£o comeƧou por ser uma soluĆ§Ć£o monolĆtica, de um sĆ³ fornecedor. Com o passar dos anos, o fornecedor Ćŗnico desagregou-se em vĆ”rios, independentes e concorrentes, dando lugar a um cenĆ”rio extremamente preocupante em termos de manutenĆ§Ć£o e evoluĆ§Ć£o futura do sistema de informaĆ§Ć£o existente. Como resultado do trabalho efetuado, foi proposta uma arquitetura que permite a evoluĆ§Ć£o do sistema atual de forma progressiva para um HSB puro.
Currently, healthcare information systems must customizable to meet each actorās needs, in a scenario of continuous adaptation and evolution. To achieve this it is essential interoperability between the multiple hospital information systems and between these and the external service providersā. Despite the need to support heterogeneous systems, access/exchange of information should be in a standard, secure and transparent way. The infrastructure of modern health information consists of many heterogeneous systems, with different mechanisms to control the underlying data. Information on a single patient may be scattered across multiple systems (e.g. patient transfer, readmission, multiple treatments, etc.). It becomes evident the need to access patient data in a consolidated manner from different locations. Thus, it is essential to use an architecture that promotes interoperability between systems. To achieve this interoperability, layers of "middleware" can be implemented that adapt information exchange between systems. However, this does not solve the underlying problem, namely the need to standardize information to ensure reliable interaction between customer / supplier. To this end, we propose a solution based on an ESB specially tailored for the healthcare business, the so-called HSB (Healthcare Service Bus). Among the information exchange standards in this area, HL7 and DICOM are the most common, the latter specifically for hospital imaging devices, the first being used for information exchange between medical information systems. The case study in this dissertation addresses the problems of a medium-sized hospital information system, which began as a monolithic solution from one supplier. Over the years, the sole supplier split into multiple competing suppliers, giving rise to a very worrying scenario in terms of maintenance and further development of the existing information system. As a result of this work, we propose an architecture that enables the gradual evolution of the current system to a pure HSB.
Currently, healthcare information systems must customizable to meet each actorās needs, in a scenario of continuous adaptation and evolution. To achieve this it is essential interoperability between the multiple hospital information systems and between these and the external service providersā. Despite the need to support heterogeneous systems, access/exchange of information should be in a standard, secure and transparent way. The infrastructure of modern health information consists of many heterogeneous systems, with different mechanisms to control the underlying data. Information on a single patient may be scattered across multiple systems (e.g. patient transfer, readmission, multiple treatments, etc.). It becomes evident the need to access patient data in a consolidated manner from different locations. Thus, it is essential to use an architecture that promotes interoperability between systems. To achieve this interoperability, layers of "middleware" can be implemented that adapt information exchange between systems. However, this does not solve the underlying problem, namely the need to standardize information to ensure reliable interaction between customer / supplier. To this end, we propose a solution based on an ESB specially tailored for the healthcare business, the so-called HSB (Healthcare Service Bus). Among the information exchange standards in this area, HL7 and DICOM are the most common, the latter specifically for hospital imaging devices, the first being used for information exchange between medical information systems. The case study in this dissertation addresses the problems of a medium-sized hospital information system, which began as a monolithic solution from one supplier. Over the years, the sole supplier split into multiple competing suppliers, giving rise to a very worrying scenario in terms of maintenance and further development of the existing information system. As a result of this work, we propose an architecture that enables the gradual evolution of the current system to a pure HSB.
Description
Keywords
Sistemas de InformaĆ§Ć£o ESB HL7 HSB Information Systems