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Work rate as a function of pressurization rate and cycling-off threshold, during pressure-support ventilation of (A) patients with acute lung injury (ALI),

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Presentation on theme: "Work rate as a function of pressurization rate and cycling-off threshold, during pressure-support ventilation of (A) patients with acute lung injury (ALI),"— Presentation transcript:

1 Work rate as a function of pressurization rate and cycling-off threshold, during pressure-support ventilation of (A) patients with acute lung injury (ALI), and (B) patients with COPD. In the patients with ALI, a Servo-300 (Siemens Elema, Solna, Sweden) was employed, and inspiratory muscle work rate was determined primarily by pressurization rate and pressure-support level. Work rate as a function of pressurization rate and cycling-off threshold, during pressure-support ventilation of (A) patients with acute lung injury (ALI), and (B) patients with COPD. In the patients with ALI, a Servo-300 (Siemens Elema, Solna, Sweden) was employed, and inspiratory muscle work rate was determined primarily by pressurization rate and pressure-support level. In the patients with COPD, a Servo-I (Maquet, Solna, Sweden) was employed, and inspiratory muscle work rate was determined by the cycling-off threshold and the levels of pressure support and applied positive end-expiratory airway pressure (PEEP). Bars are mean ± SE. ALI n = 10. COPD n = 13. * P < .05 for pressurization rate high (PRhigh) versus low (PRlow), and cycling-off threshold high (CThigh) versus low (CTlow). † P < .05 for pressure support of 5 cm H2O compared with pressure support of 15 cm H2O, and for PEEP 0 cm H2O versus 6 cm H2O. (Adapted from References 15 and 16.)‏ Catherine SH Sassoon Respir Care 2011;56:39-51 (c) 2012 by Daedalus Enterprises, Inc.

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