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the difference between the pressure of the respired gas at the mouth and the pleural pressure around the lungs, measured when the airway is open; thus, it includes not only the transmural pressure of the lung but also any drop in pressure along the tracheobronchial tree during flow.
Farlex Partner Medical Dictionary © Farlex 2012
transpulmonary pressurePhysiology The difference between airway pressure and pleural pressure–PAW—PPL, a clinically important respiratory measure in ICU Pts; it is also derived by multiplying the airway pressure by the ratio of lung parenchyma elastance and total lung elastance; for a given PAW, rise of the PPL has effects on hemodynamics, lung distention and recruitment, and interstitial lung fluid–pulmonary edema
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
trans·pul·mo·nar·y pres·sure(trans-pul'mŏ-nar-ē presh'ŭr)
The pressure difference across the lungs; the difference between the pressure at the airway opening and the pressure on the visceral pleural surface (i.e., pressure at the airway opening - pleural pressure).
Medical Dictionary for the Health Professions and Nursing © Farlex 2012