Beyond the basics: operating the new generation of ventilator.  A look at the features and functions of these units.
Most modern ventilators have several key features in common: microprocessor control of operational and monitoring functions; electromechanical valves to control and adjust gas flow patterns; and extensive monitoring systems.  In addition, these machines can provide a number of different modes of ventilation (including pressure support). Though not microprocessor-controlled, the Siemens Servo 900 series ventilators use feedback electronics to adjust inspiratory flow based on expiratory flow to meet preset volumes.  In contrast, the Bennett 7200 units use microprocessor-regulated solenoid valves to deliver preset tidal volume.  High-frequency ventilators deliver smaller tidal volumes at rates greater than 60 bpm.
Bone
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Rush Medical College, Chicago.
Eubanks
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Gluck
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D000328:Adult; D004867:Equipment Design; D006801:Humans; D007231:Infant, Newborn; D012121:Respiration, Artificial / Q000295:instrumentation* / Q000379:methods; D012122:Ventilators, Mechanical