Mean airway pressure

Mean airway pressure typically refers to the mean pressure applied during positive-pressure mechanical ventilation. Mean airway pressure correlates with alveolar ventilation, arterial oxygenation,[1] hemodynamic performance, and barotrauma.[2]

Equations

Determining the real mean airway pressure is a difficult task and there are several equations aimed at determining the real mean airway pressure. Various equations are suggested to be used to determine the actual mean airway pressure;

[3]

Unique mechanical ventilation equations

Mean airway pressure in airway pressure release ventilation

References

  1. Stewart AR, Finer NN, Peters KL (1981). "Effects of alterations of inspiratory and expiratory pressures and inspiratory/expiratory ratios on mean airway pressure, blood gases, and intracranial pressure". Pediatrics. 67 (4): 474–81. PMID 6789294.
  2. Marini JJ, Ravenscraft SA (1992). "Mean airway pressure: physiologic determinants and clinical importance--Part 2: Clinical implications". Crit Care Med. 20 (11): 1604–16. doi:10.1097/00003246-199211000-00020. PMID 1424706.
  3. David W. Chang (1999). Respiratory care calculations. Cengage Learning. pp. 251–. ISBN 978-0-7668-0517-0. Retrieved 30 March 2012.
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