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Biomedical subjects

R Schweiger

Publications and source records attributed to R Schweiger.

11 recordsLinked to original sources

Structured clinical documentation for the assessment of medical care.

The developing infrastructure for tumour documentation in Germany offers the unique opportunity to provide the physicians with useful clinical information, to evaluate standards of care, and get an impression about the "real-world-effectiveness" of cancer care. In order to compare and evaluate diagnostic and therapeutic approaches in different medical institutions or health care systems, the systematic, patient-oriented, treatment accompanying tumour documentation is a compelling requirement. Our intention is to optimise content and extent of the collected information to characterise the different dimensions of the quality of medical care the best possible. We found that most of the problems are deriving from the contextually and timely correct documentation of medical procedures which includes diagnostic as well as therapeutic interventions. The content of the documentation together with standards of care, such as Clinical Practice Guidelines, should be parallel developed in interdisciplinary co-operation. This way, the fundamental domains of performance, such as appropriateness, availability, continuity, safety, effectiveness, and timeliness of medical care can described and evaluated objectively.

Documentation↗

XML structured clinical information: a practical example.

At Giessen university, a drug formulary comprising drug data and treatment guidelines is supplied to clinical users who can access the drug information by an index of drug substances and drug substance groups. The guideline itself is a textual description with related information such as drug substances and drug brand names. Since clinical users also want to access the information by drug names, we had to extract this information from the textual descriptions. The extraction however caused some effort. In order to not repeat this effort in the future, we used the eXtensible Markup Language (XML) to restructure the information sources. This paper describes our experiences with this kind of legacy to XML conversion and outlines a possible migration path towards the XML technology.

Drug Information Services↗

Combining dictionary techniques with extensible markup language (XML)--requirements to a new approach towards flexible and standardized documentation.

In oncology various international and national standards exist for the documentation of different aspects of a disease. Since elements of these standards are repeated in different contexts, a common data dictionary could support consistent representation in any context. For the construction of such a dictionary existing documents have to be worked up in a complex procedure, that considers aspects of hierarchical decomposition of documents and of domain control as well as aspects of user presentation and models of the underlying model of patient data. In contrast to other thesauri, text chunks like definitions or explanations are very important and have to be preserved, since oncologic documentation often means coding and classification on an aggregate level and the safe use of coding systems is an important precondition for comparability of data. This paper discusses the potentials of the use of XML in combination with a dictionary for the promotion and development of standard conformable applications for tumor documentation.

Documentation↗

How to structure clinical information: a practical example.

In the frame of an European telemedicine project, we have designed and implemented an Andrology server that provides the user (e.g. physicians, students) with a set of anonymized andrology cases. Within this context we faced the problem of re-structuring existing clinical information sources and gained some experience on how much of the problem might be solved by the software engineer. This paper presents a method that partially automates the maintenance of the andrology case collection. Moreover, the potential benefit of XML for information representation will be discussed.

Humans↗

A model for integration and continuous development of standards for tumour documentation using relational database techniques and extensible markup language.

In oncology various international and national standards exist for different aspects of a disease. These standards, maintained by different organisations, have multiple relationships with each other. A common data dictionary like UMLS would facilitate the reorganisation of such relationships when a new version of a standard is published. While the modelling of relationships usually is restricted to types having a relevant frequency, there are often relationships which are expressed in texts like definitions or explanations. Such texts are a very important supplement for the acceptance and the safe use of coding systems, but often are neglected when implementing coding systems in computerised systems, because they are costly to implement. This paper discusses potentials when integrating various sources in a common, database based dictionary enhanced by XML (Extensible Markup Language) techniques.

Databases as Topic↗

Transferring data from one EPR to another: content--syntax--semantic.

When data are transmitted between electronic patient record (EPR) systems, we can distinguish several tasks. One task is the definition of structure and semantic content of the data in a message structure. Another task is the mapping of the sending EPR's structure to this message structure. A third task is the mapping of the message structure to the receiving EPR's structure. We describe an approach, which distinguishes clearly between these different tasks and activities. Using this approach we have implemented a data transfer procedure between a cancer registry application and a middleware for healthcare information systems. Our experience showed that the proposed systematic approach helped identify problems for data transfer in an early design phase. It also allowed us to limit modifications of the data exchange procedure to certain tasks or activities when one of the EPR applications was updated. In the end, we could even exchange the underlying message format without having to reimplement the complete interface.

Humans↗

Plug and play--fiction or reality?

This paper discusses some experiences with the integration of a tumor documentation system into a distributed healthcare environment using a new European middleware technology. Although the middleware already offers a considerable support to the software engineer, further facilities have been suggested and partially implemented in order to accelerate integration scenarios.

Computer Communication Networks↗

Plug and play integration into a healthcare information system.

This paper discusses some experiences with the integration of a tumor documentation system into a distributed healthcare environment using a new European middleware technology. Although the middleware already offers a considerable support to the software engineer further facilities have been developed in order to accelerate integrations. Such facilities arised from the software engineering principle of separating reusable parts and non-reusable parts.

Computer Communication Networks↗

Post-integration of a tumor documentation system into a HIS via middleware.

Integrating autonomous applications is a difficult task since they usually represent similar informations in different data schemes. Any communication requires an agreement of sender and receiver on a common data representation. The number of interfaces to convert one data representation into another is minimized if all participants of an information system agree on one data representation such as Health Level Seven (HL7) or Edifact. Even more convenient is the use of a middleware solution like the Distributed Healthcare Environment (DHE) that keeps message transfer completely transparent to the integration process. This paper discusses a project that aims at the integration of a cancer registry system into a DHE based Hospital Information System (HIS). The project is a cooperation between the universities of Giessen and Magdeburg within the framework of the European Communities Telematics Research Project HC 1019 HANSA (Healthcare Advanced Networked System Architecture). The concept of a so called 'DHE-Adapter' to integrate existing legacy systems is explained. This adapter converts a data or message format of a legacy system into calls of the DHE programming interface. To develop a DHE-Adapter for our cancer registry system we intend to design a DHE-Adapter-Generator which would be able to produce DHE-Adapters for different systems and export formats, e.g. HL7 or Edifact. That would allow a variety of software vendors to integrate their products into the DHE without entering deeply into the DHE's programming interface.

Computer Communication Networks↗

Confronting actual practice with practice guidelines in oncology.

Improving health care quality requires the availability of data to identify and eliminate unnecessary variations in the care process. Variations can be caused by an ineffective implementation of research findings or by obstacles to the translation of research into clinical practice. The analysis of current patterns of care by the use of routine data from electronic patient records or clinical registries may help highlight these deficiencies in actual care. The growing infrastructure of information technologies and the knowledge about clinically relevant variations of routine practice may help us understand the mechanisms that are impeding the translation of research into practice. There is a need to scrutinize these variations of practice and the barriers to guideline implementation. We think that an understanding and open discussion of such reasons may help, to continuously improve the quality of patient care. This process facilitates efforts and strategies to implement evidence-based medicine in the daily routine.

Data Collection↗