Software engineering in health informatics.
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Biomedical subjects
Publications and source records attributed to B I Blum.
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TWO HYPOTHESES ARE OFFERED IN THIS REVIEW OF CLINICAL INFORMATION SYSTEMS: that the technology is mature, and that benefits to patient care can be shown. More than ten years of operational experience exist with each general class of clinical information systems, and these systems favorably affect staff, reduce errors, improve accessibility to medical information and provide alerts and reminders. To reinforce the maturity hypothesis, most cited studies are also a decade old. Clinically oriented systems are practical and can improve the health care process-a key goal in this era of prepaid or prospective payment for services.
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The Johns Hopkins Oncology Center has developed OCIS , a computer based data system to aid medical personnel in making clinical decisions. All patients seen in the Center are entered into the system. Data is collected, analyzed and presented in formats designed to show the relationship between related clinical and laboratory data. Graphic plots are used to facilitate the detection of long and short term trends in the changing clinical status of individual patients. The system also provides major support for clinical research. An example of the use of this system is presented using data from patients with multiple myeloma.
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The Johns Hopkins Oncology Center has developed and maintains a clinical information system to support patient care, education, research, and administrative functions. It operates on a dedicated minicomputer (PDP-11) programmed in MUMPS. Clinical information collected includes patient medical status and laboratory values. Data are used daily in patient care and also in support of retrospective and prospective research. The use of the system to manage a large blood pheresis program and to study and treat infectious disease is described. Administrative functions include patient and personnel scheduling, program evaluation, and projects directed toward control of costs.
Clinical resources represent the major items of expense in hospital care. These resources are under the primary control of physicians. For a number of reasons it is difficult to manage these resources in the sense of ensuring their prudent use under all circumstances. Relevant clinical information brought to bear at the time and place of the decisions which allocate these resources can encourage prudent use directly (through reduction in waste) and indirectly (through improving the quality of care).
A simple, low cost computerized minirecord system (minimal essential record) has been in full operation for two years in the Medical Clinic of The Johns Hopkins Hospital. The primary objective of the minirecord system is to permit rapid retrieval of current information concerning Medical Clinic patients. The system provides a computer-printed listing of problems and medications in the front of each chart and on-line display of this information at strategically located computer terminals. The information is generated via existing simple systems with minimal additional effort and with the use of any terminology deemed appropriate. Chart review revealed that minirecords were actually present in 92% of the charts and that significant improvement occurred in the recognition of a subsequent visit of clearly defined problems and therapies noted on the initial minirecord. Current modifications will replace the separate minirecord and encounter form (registration and visit note) with a single form that will facilitate completion an updating. The rapid availability of this information provides a mechanism for coordinating continuing care in a university hospital system that is otherwise inevitably fragmented and composed of multiple health care providers.
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