Pleural pressure volume curve in trapped lung and heart failure

Pressure/volume curves are plotted in which the cause of the pleural effusion was attributed to a trapped lung resulting from different pleural insults with concomitant heart failure.
The solid circles and solid triangles represent two separate patients with heart failure and trapped lung from uremic pleurisy; the solid squares represent a patient with heart failure and trapped lung following coronary artery bypass grafting (CABG).

Reproduced with permission from the American College of Chest Physicians. Huggins JT, Sahn SA, Heidecker J, et al. Characteristics of trapped lung: pleural fluid analysis, manometry, and air-contrast chest CT. Chest 2007; 131:206. Copyright © 2007.

Graphic 59718 Version 5.0

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Pleural pressure volume curve in trapped lung and heart failure