title: [Faulty functioning of the expiration valve of the Dräger circle system].
abstract: We observed, that under controlled ventilation the expiration valve of the circle system "8 ISO" did not close and rebreathing occurred, as the spirometer run counterclockwise. In such potentially dangerous events only a capnometer which measures inspiratory CO2 would give alarm. Dräger is informed of the above and until the problem is resolved, every anaesthesist should watch the expiration valve and spirometer carefully.
authors.affiliation: Klinik für Anaesthesiologie und operative Intensivmedizin, Klinkum Steglitz, Freie Universität Berlin.
authors.forename: J
authors.initials: J
authors.lastname: Link
mesh_terms: D000776:Anesthesiology / Q000295:instrumentation*; D004868:Equipment Failure
vernacular_title: Fehlfunktion des Exspirationsventils am Dräger-Kreissystem.