Electromedical Instrumentation: A Guide for Medical Personnel
This book was originally published in 1980. Owing to the increasing use of electronic instrumentation in medical practice it was desirable that medical and nursing personnel have some technical knowledge of electronic equipment. It was the aim of this volume to help those members of the medical profession to develop this knowledge. The reader will find a survey of basic principles and methods, with illustrations of the applications in the most common fields of medical practice, for instance the registration of cardiac activity by means of the ECG. More complicated instrumental systems, such as those used for intensive care, are discussed in the light of the basic principles. These include acquaintance with three important concept in electricity: voltage, current and resistance.
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The electric current
Various electrical components used in electromedical
Electrodes and transducers
Electromedical measuring systems for ECG
Intensive care instrumentation
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adjustable already mentioned alternating current alternating voltage amplitude applied battery blood body cables calibrated called capacitive coupling capacitor catheter cells charges circuit diagram coil common-mode components connected in series current flow current will flow cut-off frequency defibrillator described in Chapter device differential amplifier direct voltage discharge earth lead ECG recording elec electrical apparatus electrical current electrical potential electrical signals electrocardiograph electrode electrode impedance electrode resistance electromedical equipment electronic equipment example filter frequency band function fuse heart rate heart-rate high-pass filter instance insulation internal ions lamp large number leakage current light magnetic mains supply means measured ment metal meter monitor negative offset voltage operation oscilloscope pacemaker patient plates plug positive pole potentiometer principle pulse R-wave resistor result safety schematic representation screen silver chloride star-point strain gauge switch temperature thermistor tissue transistor trode tube usually voltage source wall outlet waveform wire