You have a patient in whom you are measuring both airway pressure and esophageal

Question

You have a patient in whom you are measuring both airway pressure and esophageal pressures. After giving a tidal volume of 500 cc's you perform an end-inspiratory hold (no flow- static pressure measurement) and find that the alveolar pressure = 40 cm H2O, and the Pes = 25 cm H2O. The breath started at a PEEP level of 10 cm H2O. Select either correct or incorrect for each of the following statements.

1.) The PTP at the end of inspiration = 15 cm H2O

2.) The compliance of the combined lung and thorax = 16.7 ml/cm H2O

3.) The compliance of the lung = 16.7 ml/cm H2O

4.) Based upon the static pressure-volume curve of the lung, this level of PTP would put his lung volume at TLC

Explanation / Answer

All this statements are incorrect.

Because calculate of lung compliance formula is= delta V / delta P

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