caa a22 4500 465825818 CHVBK 20180323112148.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF02832148 doi (NATIONALLICENCE)springer-10.1007/BF02832148 Monitoring for disconnection: Ventilators with bellows rising on expiration can deliver tidal volumes after disconnection [Elektronische Daten] [Joachim Gravenstein, Jelle Nederstigt] Anesthesia ventilators with bellows that rise on expiration (standing bellows) are favored over ventilators with bellows that descend during expiration (hanging bellows). Standing bellows will not rise if there is a disconnection, and thus they facilitate detection of disconnections. Yet, during a disconnection of ventilators with standing bellows, mechanical inspiration compresses the empty bellows beyond its resting position; with expiration the elastic bellows recoils and aspirates up to 140 ml, depending upon the fresh gas flow. Tidal volumes recorded after disconnection ranged from 50 to 140 ml (mean, 112.2 ± 9.22 [SD]) at adult settings and from 55 to 90 ml (mean, 69.8 ± 4.28 [SD]) at pediatric settings. Thus, spirometers that measure tidal volume (Vt) in the expiratory limb of the breathing system may falsely indicate an expiratory Vt after a disconnection of the breathing system at the Y-piece or the endotracheal tube. Existing low-pressure alarms and capnography alarms provide redundant warning of disconnection, however, should the ventilator continue to deliver small Vts after a disconnection. Little, Brown and Company, 1990 Complications: accidents nationallicence Monitoring: ventilation nationallicence Ventilation: airway pressure, tidal volume nationallicence Gravenstein Joachim Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL aut Nederstigt Jelle Division of Medical Electrical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands aut Journal of Clinical Monitoring Springer Netherlands 6/3(1990-07-01), 207-210 0748-1977 6:3<207 1990 6 10877 https://doi.org/10.1007/BF02832148 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02832148 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gravenstein Joachim Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL aut NATIONALLICENCE 700 1- Nederstigt Jelle Division of Medical Electrical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands aut NATIONALLICENCE 773 0- Journal of Clinical Monitoring Springer Netherlands 6/3(1990-07-01), 207-210 0748-1977 6:3<207 1990 6 10877 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer