Supriya Ghosh (Editor)

Mean airway pressure

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

Contents

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;

M P A W = f ∗ T i 60 ∗ ( P I P − P E E P ) + P E E P M P A W = F 1 F 1 + F E ∗ P I P + ( 1 − F 1 F 1 + F E ) ∗ P E E P M P A W = ( R ) ( T i ) ( P I ) + [ 60 − ( R ) ( T i ) ] ( P E E P ) 60 M P A W = f ∗ T i 60 ∗ ( P I P − P E E P ) + P E E P M P A W = ( T i ∗ P I P ) + ( T e ∗ P E E P ) T i + T e

Unique mechanical ventilation equations

Mean airway pressure in airway pressure release ventilation
M P A W = ( P h i g h ∗ T h i g h ) + ( P l o w ∗ T l o w ) T h i g h + T l o w

References

Mean airway pressure Wikipedia
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