6. Using the ug compliance relationships for different diseases presented i the

Question

6. Using the ug compliance relationships for different diseases presented i the figure below, answer the following questions. disease 2 0.5 0 10 20 30 Pressure (cm H2O) BENG 14 Homework 7: Due March 17th (c) Assuming that intrapleural pressure at end of inspiration can be ncreased or decreased freely, what is the transpulmonary pressure required for each disease, to match the tidal volume of normal conditions. The table below should help. Pathology Tidal Volume (L) (fr (New Voume at the EndNew Transpulmonary of Inspiration (L) Pressure (mmHg) at the End of Inspiration Emphysema Asthma Cardiac Discase Fibrosis Respiratory Distress Syndrome

Explanation / Answer

as mentioned in the above diag. the tidal volume mentioned is as follows.

therefore transpulmonary pressure is the difference between alveolar pressure and intrapleural pressure.

pathology tidal volume new volume at end of respiration new transpulmonary pressure emphysema 3 0.5 -8 asthma 2 0.5 -7 normal 1 0.5 -8 cardiac disease 1.3 0.5 6 fibrosis 1.1 0.5 5 respiratory distress syndrome 0.5 0.5 4

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