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Proportional Assist Ventilation (PAV): Physiologic Rationale and Clinical Advantages

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Anaesthesia, Pain, Intensive Care and Emergency Medicine — A.P.I.C.E.
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Abstract

Considerable interest has recently developed in pressure-assisted methods of ventilatory support. Two of these have been so far described, pressure support ventilation (PSV) (1,2) and the more recent proportional assist ventilation (PAV) (3, 4). The intent of these methods is to assist each spontaneous breath by providing positive pressure at the airway (Paw) during the period of spontaneous inspiration. During PSV and PAV, Paw is the ventilator controlled variable while inspiratory flow and tidal volume are determined by the combined action of the pressure generated by the respiratory muscles (Pmus) the pressure generated by the ventilator (Pappl). Because the ventilatory consequences of these methods are essentially the result of patient-ventilator interaction, the patient retains considerable control over breathing pattern, flow pattern and ventilation, and this is expected to result in greater patient comfort (5).

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References

  1. Brochard L, Harf A, Lorino H, Lemaire F (1989) Inspiratory pressure support prevents diaphragmatic fatigue during weaning from mechanical ventilation. Am Rev Respir Dis 139:513–521

    Article  PubMed  CAS  Google Scholar 

  2. Macintyre NR, Leatherman NE (1990) Ventilatory muscle loads and the frequency-tidal volume pattern during inspiratory pressure-assisted (pressure supported) ventilation. Am Rev Respir Dis 141:327–331

    PubMed  CAS  Google Scholar 

  3. Younes M (1992) Proportional assist ventilation, a new approach to ventilatory support. Am Rev Respir Dis 145:114–120

    Article  PubMed  CAS  Google Scholar 

  4. Younes M, Puddy A, Roberts D, Light RB, Quesada A, Taylor K, Oppenheimer L, Cramp H (1992) Proportional assist ventilation. Results of an initial clinical trial. Am Rev Respir Dis 145:121–129

    Article  PubMed  CAS  Google Scholar 

  5. Brochard L (1994) Pressure support ventilation. In: Tobin MJ (ed) Principles and practice of mechanical ventilation. McGraw-Hill, New York, pp 239–257

    Google Scholar 

  6. Younes M (1991) Proportional assist ventilation and pressure support ventilation: similarities and differences. In Marini JJ, Roussos C (eds) Ventilatory failure. Springer, Berlin Heidelberg New York, pp 361–380

    Google Scholar 

  7. Mascia L, Grasso S, GiuHani R, Caracciolo A, Brienza A, Bruno F, Fiore T, Ranieri VM (1995) Patient-ventilator interaction following sudden changes in respiratory drive: pressure support ventilation (PSV) vs proportional assist ventilation (PAV). Am J Respir Crit Care Med (in press)

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  8. Grasso S, Mascia L, Giuliani R, Lagioia V, Spagnolo A, Pughese V, De Tulho R, Ranieri VM (1995) Ventilatory support in COPD during Proportional Assist Ventilation (PAV): Effects on breathing pattern and inspiratory effort. Am J Respir Crit Care Med (in press)

    Google Scholar 

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© 1996 Springer-Verlag Italia, Milano

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Ranieri, M., Grasso, S., Mascia, L., Giuliani, R. (1996). Proportional Assist Ventilation (PAV): Physiologic Rationale and Clinical Advantages. In: Gullo, A. (eds) Anaesthesia, Pain, Intensive Care and Emergency Medicine — A.P.I.C.E.. Springer, Milano. https://doi.org/10.1007/978-88-470-2203-4_25

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  • DOI: https://doi.org/10.1007/978-88-470-2203-4_25

  • Publisher Name: Springer, Milano

  • Print ISBN: 978-3-540-75014-7

  • Online ISBN: 978-88-470-2203-4

  • eBook Packages: Springer Book Archive

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