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A system for performing real-time analysis of cardiac action potentials has been developed using a microcomputer based on the Motorola 6800 central processor. Transmembrane potentials obtained using standard microelectrodes were digitized to 8 bits at 80 ms intervals, stored in cyclic memory...
A non-invasive system for monitoring chest and abdominal motion is described. The system is based on the use of two microwave interferometers. A linear relationship with tidal volume can be obtained using an isovolume technique for calibration. Although the system is not an improvement on...
In Liverpool Health Authority a computer inventory of over 6000 items of medical equipment is used as an aid to servicing and management. Extracts from the inventory are used to guide work in several different servicing units and the cross-referencing facility is employed to provide lists of...
The condition of critically ill patients may change rapidly. The consequent alterations in drug therapy may result from the advice of a number of specialists, some of whom may not be skilled in the problems of adverse drug interactions. As a result, screening for drug contra-indications by...
A microprocessor-based system devoted to ambulatory monitoring of heart-rate variability (HRV) is described. Mainly it measures R-R intervals after QRS detection and provides a real-time quantification of the HRV. The concept of derived successions and a suitable set of graphical summaries are...
The chest wall comprising both rib cage and abdomen moves during breathing, and when suitably calibrated this motion can be used to monitor pulmonary ventilation without the need for face-masks or mouthpieces. Such non-invasive methods of studying breathing are likely to become more widely used...
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