Pressure-support ventilation (PSV) is a form of important ventilation mode. Patient-ventilator synchrony of pressure support ventilation can be divided into inspiration-triggered and expiration-triggered ones. Whether the ventilator can track the patient's inspiration and expiration very well or not is an important evaluating item of the performance of the ventilator. The ventilator should response to the patient's inspiration effort on time and deliver the air flow to the patient under various conditions, such as different patient's lung types and inspiration effort, etc. Similarly, the ventilator should be able to response to the patient's expiration action, and to decrease the patient lung's internal pressure rapidly. Using the Active Servo Lung (ASL5000) respiratory simulation system, we evaluated the spontaneous breathing of PSV mode on E5, Servo i and Evital XL. The following parameters, the delay time before flow to the patient starts once the trigger variable signaling the start of inspiration, the lowest inspiratory airway pressure generated prior to the initiation of PSV, etc. were measured.
Citation：
ZHOUJuan, WUHao, CAODesen. Evaluation of Patient-ventilator Synchrony of Three New Types of Ventilators with Pressure Support Ventilation Mode. Journal of Biomedical Engineering, 2014, 31(4): 793-797. doi: 10.7507/1001-5515.20140148
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Copyright © the editorial department of Journal of Biomedical Engineering of West China Medical Publisher. All rights reserved
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- 2. RRT-NPS R L. Classification of ventilator modes: update and proposal for implementation[J]. Respir Care, 2007, 52(3): 301-323.
- 3. TANIOS M A, EPSTEIN S K. Spontaneous breathing trials: should we use automatic tube compensation?[J]. Respir Care, 2010, 55(5): 640-642.
- 4. TERADO M, ICHIBA S, NAGANO O, et al. Evaluation of pressure support ventilation with seven different ventilators using Active Servo Lung 5000[J]. Acta Med Okayama, 2008, 62(2): 127-133.
- 5. FERREIRA J C, CHIPMAN D W, KACMAREK R M. Trigger performance of mid-level ICU mechanical ventilators during assisted ventilation: a bench study[J]. Intensive Care Med, 2008, 34(9): 1669-1675.
- 6. MURATA S, YOKOYAMA K, SAKAMOTO Y, et al. Effects of inspiratory rise time on triggering work load during pressure-support ventilation: a lung model study[J]. Respir Care, 2010, 55(7): 878-884.
- 7. THILLE A W, RODRIGUEZ P, CABELLO B, et al. Patient-ventilator asynchrony during assisted mechanical ventilation[J]. Intensive Care Med, 2006, 32(10): 1515-1522.
- 8. YAMADA Y, DU H L. Analysis of the mechanisms of expiratory asynchrony in pressure support ventilation: a mathematical approach[J]. J Appl Physiol, 2000, 88(6): 2143-2150.
- 9. GEORGOPOULOS D, ROUSSOS C. Control of breathing in mechanically ventilated patients[J]. Eur Respir J, 1996, 9(10):2151-2160.
- 10. ROZÉ J C, KRVGER T. Pressure support ventilation--a new triggered ventilation mode for neonates[EB/OL]. 2011. http://www.draeger.com.cn/CN/zh/search.action.
- 11. GAMA DE ABREU M, ROCCO P R M, PELOSI P. Pros and cons of assisted mechanical ventilation in acute lung injury[M]//VINCENT J L. Annual update in intensive care and emergency medicine. Berlin Heidelberg: Springer Berlin Heidelberg, 2011, 1: 159-173.
- 12. 中华人民共和国卫生部.WS 392-2012中华人民共和国卫生行业标准:呼吸机临床应用[S]. 北京:中国计量出版社,2012.
