• J Crit Illn · May 1992

    Beyond the basics: operating the new generation of ventilator. A look at the features and functions of these units.

    • R C Bone, D H Eubanks, and E Gluck.
    • Rush Medical College, Chicago.
    • J Crit Illn. 1992 May 1; 7 (5): 770-82; 787-8.

    AbstractMost 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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