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Physiologic monitors designed for continuous measurement and display of information of the respiratory parameters related to the gas composition of the breathing inspired or exhaled gases and/or the respiratory function mechanics (ventilation). These units are hard-wired at the bedside. These monitors consist of a central unit with electronic circuits that can process data from attached sensors and display the numerical values and the respiratory cycle waveforms. Respiration monitors are intended to measure the pressure and concentration of the breathing gases, to assess the inspiratory and expiratory cycle (i.e., respiratory function mechanics, known as ventilation) including parameters such as respiration rate, volume of air, and cessation of breathing (apnea), and/or to measure the conditions (e.g., temperature, pressure) in the ventilation circuit (i.e., the artificial airways).
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