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C Zeelenberg

Publications and source records attributed to C Zeelenberg.

14 recordsLinked to original sources
PubMed1998

Integration and communication for the continuity of cardiac care (I4C).

The project I4C (Integration and Communication for the Continuity of Cardiac Care) is carried out for the advancement of cardiac care, from prevention to follow-up. The goals of I4C are: (1) integrated access to patient data, wherever they are stored; (2) support of evidence-based care; (3) consistent recording of patient data (eg, patient history, electrocardiograms IECGs] or cine-angios) in a multimedia patient record; and (4) a documented reference data set for research. In several clinics, workstations are being installed to serve the four goals. Integration with other information systems in clinical care is realized by encapsulation. A computer-based patient record (ORCA) has been developed to support the collection, consultation, and sharing of patient data. In I4C, ORCA is intended for use in a research setting as well as routine patient care. The functionality of ORCA covers the collection of patient history data in a highly structured manner, the recording of drug prescriptions, an overview of laboratory test results, and viewers for ECGs and angiographic images. At present, structured data entry and consultation is supported in six European languages.

Cardiac Care Facilities↗
PubMed1992

The European ST-T database: standard for evaluating systems for the analysis of ST-T changes in ambulatory electrocardiography.

The project for the development of the European ST-T annotated Database originated from a 'Concerted Action' on Ambulatory Monitoring, set up by the European Community in 1985. The goal was to prototype an ECG database for assessing the quality of ambulatory ECG monitoring (AECG) systems. After the 'concerted action', the development of the full database was coordinated by the Institute of Clinical Physiology of the National Research Council (CNR) in Pisa and the Thoraxcenter of Erasmus University in Rotterdam. Thirteen research groups from eight countries provided AECG tapes and annotated beat by beat the selected 2-channel records, each 2 h in duration. ST segment (ST) and T-wave (T) changes were identified and their onset, offset and peak beats annotated in addition to QRSs, beat types, rhythm and signal quality changes. In 1989, the European Society of Cardiology sponsored the remainder of the project. Recently the 90 records were completed and stored on CD-ROM. The records include 372 ST and 423 T changes. In cooperation with the Biomedical Engineering Centre of MIT (developers of the MIT-BIH arrhythmia database), the annotation scheme was revised to be consistent with both MIT-BIH and American Heart Association formats.

Algorithms↗
PubMed1987

Computer technology: state of the art and future trends.

Computer technology and, more broadly, information technology, are bringing about a fundamental transformation in our society from an industrial economy to an information economy. A review of the short history and present state of information technology identifies two major undercurrents: the miniaturization of computer components, which has produced a millionfold increase in the complexity possible in a single chip of silicon, and the integration of four previously separate areas of information technology: computation, communication, databases and the user interface. Microelectronics, computer networks, data storage and user amenities are the basic technologies that support these four areas and stimulate their progress. Future trends in speech recognition, voice synthesis, artificial intelligence, expert systems, computational imaging and scientific workstations are also examined.

Artificial Intelligence↗
PubMed1982

Computer-based patient monitoring.

A computerized ICU patient monitoring system is described. The bedside module is a general-purpose unit designed to replace the entire range of traditional monitoring devices. All user-interaction, signal processing, and data presentation in this unit are under the direct control of a microcomputer. The nurse-station module, also containing a microcomputer, is responsible for information routing, controlling nurse-desk equipment as well as data and signal presentation. The system hs been in use since 1978 in our 8-bed surgical ICU and since 1980 in an 8-bed coronary care unit. The application programs for ECG, blood pressures, temperature, thermodilution cardiac output, and fluid balance are discussed. The programs for monitoring controlled ventilation are presented in detail. The possibility for feedback control of mechanical ventilation is reviewed. Examples of clinical advantages from automation are given.

Blood Pressure↗
PubMed1982

The microcomputer in medical instrumentation. Aspects of an automated monitoring system.

The major technical trends in medical computing include sensor devices and artificial intelligence techniques. Use of the computer will render instruments more accessible and make them friendlier to the user. Examples include automation of gain setting in echocardiology and instant computation of M-mode data. In intensive care units, computers have become an integral part of patient monitoring over the last two decades. Third generation microcomputer-based systems are presently helping to solve many earlier problems. Features such as touch-sensitive keys or screens (eliminating keyboards) and integrated front-end are greatly increasing user acceptance. A new monitoring system developed at the Thorax Center for intensive cardiac patient monitoring and provided with these features will be described.

Computers↗
PubMed1978

Computer analysis of oximetry data in cardiac catheterization.

An on-line computer technique is described for the detection and quantitation of left-to-right shunts. The computer used Student's t test to evaluate the probability that variations in right heart oxygen saturations were due to left-to-right shunts. The computer method was found to compare favorably to the present step-up method of detecting left-to-right shunts. The computer also calculated pulmonary blood flow, systemic blood flow, their ratio, and shunt blood flow as accurately as standard methods, as evidenced by correlation coefficients of 0.98, 0.94, 0.95, and 0.71 between the computer and hand calculations.

Cardiac Catheterization↗
PubMed1977

Automatic data processing in the cardiac catheterization laboratory.

A review of automatic data processing in the cardiac catherization lab is presented. The emphasis placed on on-line manometry, indicator dilution and off-line quantitative ventriculography. The system organization is described and several specific examples given to illustrate the level of detail necessary to specify such a system. The clinical use of the system is described together with an evaluation of the original design goals in terms of the actual performance of the system. A few unexpected benefits have emerged with respect to quality control and reliability, but one of the original design goals, speeding up the catheterization procedure, has proven to be unrealistic. The next logical steps in the software and hardware evolution are described with the emphasis placed on making the system a more effective tool for the clinician.

Cardiac Catheterization↗
PubMedDate not supplied

Design and implementation of a portal for the medical equipment market: MEDICOM.

BACKGROUND: The MEDICOM (Medical Products Electronic Commerce) Portal provides the electronic means for medical-equipment manufacturers to communicate online with their customers while supporting the Purchasing Process and Post Market Surveillance. The Portal offers a powerful Internet-based search tool for finding medical products and manufacturers. Its main advantage is the fast, reliable and up-to-date retrieval of information while eliminating all unrelated content that a general-purpose search engine would retrieve. The Universal Medical Device Nomenclature System (UMDNS) registers all products. The Portal accepts end-user requests and generates a list of results containing text descriptions of devices, UMDNS attribute values, and links to manufacturer Web pages and online catalogues for access to more-detailed information. Device short descriptions are provided by the corresponding manufacturer. The Portal offers technical support for integration of the manufacturers Web sites with itself. The network of the Portal and the connected manufacturers sites is called the MEDICOM system. OBJECTIVES: To establish an environment hosting all the interactions of consumers (health care organizations and professionals) and providers (manufacturers, distributors, and resellers of medical devices). METHODS: The Portal provides the end-user interface, implements system management, and supports database compatibility. The Portal hosts information about the whole MEDICOM system (Common Database) and summarized descriptions of medical devices (Short Description Database); the manufacturers servers present extended descriptions. The Portal provides end-user profiling and registration, an efficient product-searching mechanism, bulletin boards, links to on-line libraries and standards, on-line information for the MEDICOM system, and special messages or advertisements from manufacturers. Platform independence and interoperability characterize the system design. Relational Database Management Systems are used for the system s databases. The end-user interface is implemented using HTML, Javascript, Java applets, and XML documents. Communication between the Portal and the manufacturers servers is implemented using a CORBA interface. Remote administration of the Portal is enabled by dynamically-generated HTML interfaces based on XML documents. A representative group of users evaluated the system. The aim of the evaluation was validation of the usability of all of MEDICOM s functionality. The evaluation procedure was based on ISO/IEC 9126 Information technology - Software product evaluation - Quality characteristics and guidelines for their use. RESULTS: The overall user evaluation of the MEDICOM system was very positive. The MEDICOM system was characterized as an innovative concept that brings significant added value to medical-equipment commerce. CONCLUSIONS: The eventual benefits of the MEDICOM system are (a) establishment of a worldwide-accessible marketplace between manufacturers and health care professionals that provides up-to-date and high-quality product information in an easy and friendly way and (b) enhancement of the efficiency of marketing procedures and after-sales support.

Advertising↗
PubMedDate not supplied

The Unibed patient monitoring system: a new approach for a new technology.

The Unibed patient monitoring system represents a new approach to the design of medical instrumentation based upon recent advances in microcomputer and related large-scale integration technology. This system is intended to replace an entire range of traditional monitoring devices with a single general-purpose unit capable of recognizing the nature of the signal source and performing appropriately. All of the usual switches, knobs, dials, and meters have been replaced by a touch-sensitive character display. The hardware responsible for physiological signal analysis, information display, and user interaction is actually a set of firmware modules implemented in terms of microcomputer programs. This firmware gives the system its functional personality and transforms it from a compact process-control system into a useful medical instrument. Prototypes are now being clinically tested and evaluated at the Dijkzigt Academic Hospital, Rotterdam, Netherlands.

Computers↗