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Hypermedia and hypertext are the focus of intense interest in multiple disciplines in medicine, particularly pathology. This communication provides explanation of theories and applications that serve as motivation for the expansion of use of these technologies. The Dartmouth Interactive Medical Record (IMR) project is discussed.
The costly application of informatics in practical medicine should be associated with unequivocal clear motivation. Three important problems are presented whose solution is possible only by computer use: integration of health information on each citizen in the country with recording of this information in a modern carried which is possessed by each patient, wide availability of modern medical computerized medical documentation for research and statistical analysis, and computer-assisted rational economics of health care services.
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An interdisciplinary field, namely the differential diagnosis of balance disorders and vertigo, is used to describe how a medical expert system can be developed using modern computer analysis, medical expertise, and human pattern recognition techniques. The advantages, results, and unresolved issues of close cooperation between biomedical engineers and physicians are described. The aim of this cooperation was to ensure that complicated data were presented in simple graphic form and that large amounts of diagnostic data were optimally linked together for the generation of a recommended diagnosis. Similar techniques may usefully be employed in other areas of medicine.
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The Belgian Society for Medical Informatics (MIM) organized a survey in 1986 in order to assess the present state of development of medical informatics in Belgium. Questionnaires were sent to hospitals, laboratories, private practitioners and pharmacists, as well as to social security organizations and software industries. The response rate was higher in hospitals (93%) than in any other category. Results showed a large number of computerized hospitals (93% of general acute care hospitals and 91% of psychiatric hospitals). There has been a sharp increase (+ 15%) in computerization of the admission, accounting and billing procedures since 1985, most likely in relation with administrative rules issued by the Belgian Government. The same trend (+ 20%) has been observed for computer applications in clinical laboratories, between 1984 and 1985. There is almost one computer terminal for ten beds in the hospitals with more than 200 beds in 1986. This figure exemplifies the present trend to on-line access to data. Computerized instrumental aids to medicine such as text processing, imaging or computerized interpretation of signals have known a rapid extension during recent years, although less comprehensive than administrative applications in hospitals and in social security organizations. The present state of other applications in medicine (general practice, pharmacy, etc.) was more difficult to assess as those information systems remain more pinpointed. In all medical fields, there appears to be a new rise in computer programs offered by software companies.
The Organization Engine is an early example of Virtual Data Integration--providing the appearance of integration at the desktop without modifying existing infrastructure. Starting with the Organization Engine, eight programming days were needed to provide uniform desktop access to a CODASYL-compliant hospital information system and to a MUMPS-based radiology information system (the technique is equally effective for relational and other data bases). The resulting tool provides a seamless integration of these two systems, image storage, pre-recorded audio, and document storage. In addition to providing uniform access, the tool allows healthcare providers to organize the data to suit their individual needs. The ease of this integration lies in two simple techniques: the transformation of data from all sources into a single, homogeneous representation, and the use of simple customization files to describe new object types and formats. The approach is sufficiently general to allow the integration of applications which present external interfaces of radically different forms. Two such forms are discussed here: data map publication and transactions.
Health care delivery is information intensive. As computer applications make information available to the decision maker with speed and accuracy, informatics applications will strengthen the infrastructure. This paper is the second part of a multicenter systems analysis study to design a common application software to support primary health care focused on information flow. We present the questionnaire analysis and observations from a field study of a district health site. Analyses using contingency tables revealed differences, some statistically significant. The field study confirmed that minor differences exist even within a district health site. Development of a common application software on the basis of information flow studies is feasible. However, to make optimum use of computer implementation, revision of the health information systems was recommended. It was suggested that application software be developed with the core data set required by the care providers to deliver and administrators to manage a vertical health program.
This paper summarizes the author's point of view of defining medical informatics, to stimulate further discussions on how this "newly emerging discipline" should further proceed. We realize that the term "informatics" is related rather to the term "information science" than to "computer science". Accordingly, medical informatics deals with the systematic processing of information in medicine. Many information systems in medicine are interrelated and can hardly be regarded as independent systems. As a result, medicine becomes gradually more an "empirical science of extreme complexity". Because of its complexity and wide range of applications, medical informatics should be considered as a separate discipline, its aim being to contribute to the systematic processing of information in medicine. The contribution of medical informatics should be a better understanding of the human being and means for the provision of high quality patient care.
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The confidence of physicians and surgeons in computerized medical systems is highly related to data reliability, while the confidence of the public depends on the protection of medical information in automated systems. In order to assure to patients medical data privacy, the MIM is of opinion that deontological and legal rules concerning access to identifiable medical data in automated information systems shall be the same as those that are applicable to conventional medical records. The access to medical data banks should be exclusively reserved to physicians responsible for patient care and to the personnel mandated by them.
The potential impact of the computer on the practice of obstetrics has long been recognized and is slowly being realized. Computers are already essential in many administrative aspects of obstetrics and indispensable in data storage and analysis for clinical research. Emerging applications include computer systems for taking the perinatal history, storage and on-line interpretation of fetal monitor tracings, information retrieval for case management and research purposes, and computer-assisted instruction. Future applications offer possibilities of computerized consulting for support of obstetric decisions and sophisticated case simulations for continuing education.