Clinical evaluation of pushover mechanical ventilation with the Ohmeda Universal Portable Anesthesia Complete vaporizer.

Previous studies have not demonstrated the usefulness of a mechanical ventilator with the Universal Portable Anesthesia Complete (UPAC) field anesthesia delivery system in a pushover mode. This study demonstrated that the Lifecare PLV-100 ventilator can function effectively in a practical pushover configuration with the UPAC vaporizer. By comparison, vaporizer output followed the patterns of documented concentration curves for isoflurane at a given dial setting and minute ventilation. Measured airway pressures in the breathing circuit were within physiological parameters.