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  • Title: Beyond the basics: operating the new generation of ventilator. A look at the features and functions of these units.
    Author: Bone RC, Eubanks DH, Gluck E.
    Journal: J Crit Illn; 1992 May; 7(5):770-82; 787-8. PubMed ID: 10148158.
    Abstract:
    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.
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