M. Weiss, C. Doell, N. Koepfer, C. Madjdpour, K. Woitzek, V. Bernet

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Rapid pressure compensation by automated cuff pressure controllers worsens sealing in tracheal tubes M. Weiss, C. Doell, N. Koepfer, C. Madjdpour, K. Woitzek, V. Bernet British Journal of Anaesthesia Volume 102, Issue 2, Pages 273-278 (February 2009) DOI: 10.1093/bja/aen355 Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

Fig 1 Cuff pressure controllers tested: (a) Cuff Pressure Manometer, Microcuff GmbH, Weinheim, Germany; (b) VBM Pressure Controller, VBM Medizintechnik GmbH, Sulz a.N., Germany; (c) Tracoe™ Pressure Controller, TRACOE medical GmbH, Frankfurt, Germany. British Journal of Anaesthesia 2009 102, 273-278DOI: (10.1093/bja/aen355) Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

Fig 2 Mean ratio (%) of expiratory to inspiratory tidal volumes recorded with each of the three cuff pressure controllers and each of the four different ID 8.0 mm tracheal tube brands tested at cuff pressures of 10, 15, 20, and 25 cm H2O and at peak inflation pressure of 20 and 25 cm H2O (n=16 measurements per device, tracheal tube brand, cuff pressure and inspiratory peak pressure). British Journal of Anaesthesia 2009 102, 273-278DOI: (10.1093/bja/aen355) Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

Fig 3 Mean ratio (%) of expiratory to inspiratory tidal volumes recorded with each of the three cuff pressure controllers and each of the four different ID 5.0 mm tracheal tube brands tested at cuff pressures of 10, 15, 20, and 25 cm H2O and at peak inflation pressure of 20 and 25 cm H2O (n=16 measurements per device, tracheal tube brand, cuff pressure and inspiratory peak pressure). British Journal of Anaesthesia 2009 102, 273-278DOI: (10.1093/bja/aen355) Copyright © 2009 British Journal of Anaesthesia Terms and Conditions