[Faulty functioning of the expiration valve of the Dräger circle system].
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.
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Klinik für Anaesthesiologie und operative Intensivmedizin, Klinkum Steglitz, Freie Universität Berlin.
D000776:Anesthesiology / Q000295:instrumentation*; D004868:Equipment Failure
Fehlfunktion des Exspirationsventils am Dräger-Kreissystem.