• J Clin Monit · Apr 1989

    Positive end-expiratory pressure: implications for tidal volume changes in anesthesia machine ventilation.

    • W R Elliott, A E Harris, and J H Philip.
    • Department of Anesthesia, Brigham and Women's Hospital, Boston, MA 02115.
    • J Clin Monit. 1989 Apr 1; 5 (2): 100-4.

    AbstractIn clinical practice, the addition of positive end-expiratory pressure (PEEP) into a standard anesthesia circle circuit decreases the delivered tidal volume (DTV) to a patient. We studied the magnitude of the delta DTV/delta PEEP relationship in two commonly used anesthesia systems. In addition, the magnitude of the delta DTV/delta PEEP relationship varies with both pulmonary compliance and volume of gas contained in the patient's breathing system between the ventilator and PEEP valve site, and this was also evaluated. Routine monitoring of expired tidal volume should be used whenever PEEP is added to an anesthesia circuit.

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