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The pleural cavity, or pleural space (or sometimes intrapleural space), is the potential space between the pleurae of the pleural sac that surrounds each lung. A small amount of serous pleural fluid is maintained in the pleural cavity to enable lubrication between the membranes , and also to create a pressure gradient .
This is called the pleural cavity (also pleural space). [2] It contains a tiny amount of serous fluid (pleural fluid) secreted by the pleurae, at an average pressure that is below the atmospheric pressure under healthy conditions. The two lungs, each bounded by a two-layered pleural sac, almost fill the thoracic cavity.
The defining symptom of pleurisy is a sudden sharp, stabbing, burning or dull pain in the right or left side of the chest during breathing, especially when one inhales and exhales. [9] It feels worse with deep breathing, coughing, sneezing, or laughing. The pain may stay in one place, or it may spread to the shoulder or back. [10]
Normally, the pressure within the pleural cavity is slightly less than the atmospheric pressure, which is known as negative pressure. [1] When the pleural cavity is damaged or ruptured and the intrapleural pressure becomes greater than the atmospheric pressure, pneumothorax may ensue. Intrapleural pressure is different from intrathoracic pressure.
Pleural effusion and empyema - Microorganisms from the lung may trigger fluid collection in the pleural cavity, or empyema. Pleural fluid, if present, should be collected with a needle and examined. Depending on the results, complete drainage of the fluid with a chest tube may be necessary to prevent proliferation of the infection. Antibiotics ...
The pain can be so intense that it can be mistaken for a brain aneurysm, Cohen noted. "Cluster headaches usually last from 15 minutes to three hours and tend to occur in cycles lasting days or ...
A collapsed lung can result when the pleural cavity (the space outside the lung) accumulates blood or air (pneumothorax) or both (hemopneumothorax). These conditions do not inherently involve damage to the lung tissue itself, but they may be associated with it.
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