Characteristics of the ventilator pressure-and flow-trigger variables
Authors:
- 1 February 1995
- journal article
- research article
- Published by Springer Nature in Intensive Care Medicine
- Vol. 21 (2) , 159-168
Abstract
Pressure- and flow-triggering are available in the Puritan Bennett 7200ae and Siemens SV 300. Using a mechanical lung model, we described the characteristics of the pressure- and flow-triggered continuous positive airway pressure (CPAP) of both ventilators. In the Puritan Bennett 7200ae, the pressure-triggered CPAP is characterized by the relatively insufficient flow delivery after the triggering, resulting in a greater lung pressure-time product (total PTP) than the flow-triggered CPAP. Pressure support of 5 cmH2O results in total PTP less than that with flow-triggered CPAP. In the Siemens SV 300, total PTP with pressure- or flow-triggered CPAP is comparable. Total PTP is less with pressure- or flow-triggered CPAP of the Siemens SV 300 than that of the Puritan Bennett 7200ae, respectively. The application of small pressure-or flow-triggered pressure support in the Puritan Bennett 7200 ae eliminates the difference. The impact of these differences on patient inspiratory muscle work remains to be determined.Keywords
This publication has 20 references indexed in Scilit:
- Imposed work of breathing and methods of triggering a demand-flow, continuous positive airway pressure systemCritical Care Medicine, 1993
- Inspiratory Pressure Support Compensates for the Additional Work of Breathing Caused by the Endotracheal TubeAnesthesiology, 1991
- Effects of Initial Flow Rate and Breath Termination Criteria on Pressure Support VentilationChest, 1991
- Flow-regulated continuous positive airway pressure to minimize imposed work of breathingCritical Care Medicine, 1990
- Inspiratory work of breathing on flow-by and demand-flow continuous positive airway pressureCritical Care Medicine, 1989
- Importance of trigger sensitivity to ventilator response delay in advanced chronic obstructive pulmonary disease with respiratory failureCritical Care Medicine, 1989
- Work of Breathing and Airway Occlusion Pressure during Assist-Mode Mechanical VentilationChest, 1988
- Pressure Support Compensation for Inspiratory Work due to Endotracheal Tubes and Demand Continuous Positive Airway PressureChest, 1988
- Additional Inspiratory Work in Intubated Patients Breathing with Continuous Positive Airway Pressure SystemsAnesthesiology, 1985
- Inspiratory Work and Airway Pressure with Continuous Positive Airway Pressure Delivery SystemsChest, 1985