ABSTRACT
At functional residual capacity (FRC) Ppl is slightly subatmospheric, approximately –3 to –5 cmH2O.5 is results from the equilibrium achieved by the elastic recoil forces
Introduction 174 Normal pleural pressure physiology 174 Definitions: Lung entrapment versus trapped lung175 Technique 176 Manometry in the clinical setting 176
Re-expansion pulmonary edema 177 Pleurodesis 177 Symptoms 178 Conclusion 178 References 178
of the lung and the tendency of the chest wall to expand. Pleural pressure actually consists of pleural liquid pressure and pleural surface pressure. e dierence between these two pressures relates to deformation forces created by areas of parietal and visceral pleural contact. ese deformation forces result in a pleural liquid pressure that is slightly more subatmospheric than one would expect, based solely on the recoil pressures of the lung and chest wall.6
