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A pleural effusion is accumulation of excessive fluid in the pleural space, the potential space that surrounds each lung.Under normal conditions, pleural fluid is secreted by the parietal pleural capillaries at a rate of 0.6 millilitre per kilogram weight per hour, and is cleared by lymphatic absorption leaving behind only 5–15 millilitres of fluid, which helps to maintain a functional ...
Acute lung injury may cause pulmonary edema directly through injury to the vasculature and parenchyma of the lung, causes include: Inhalation of hot or toxic gases [12] (including vaping-associated lung injury) Pulmonary contusion, i.e., high-energy trauma (e.g. vehicle accidents) Aspiration, e.g., gastric fluid
About 2–3% of all fluid collections surrounding the lungs (pleural effusions) are chylothoraces. [2] It is important to distinguish a chylothorax from a pseudochylothorax (a pleural effusion that happens to be high in cholesterol ), which has a similar appearance visually but is caused by more chronic inflammatory processes and requires a ...
Serous membrane fluid collects on microvilli on the outer layer and acts as a lubricant and reduces friction from muscle movement. This can be seen in the lungs, with the pleural cavity. Pericardial fluid is a serous fluid secreted by the serous layer of the pericardium into the pericardial cavity. The pericardium consists of two layers, an ...
There are three stages: exudative, when there is an increase in pleural fluid with or without the presence of pus; fibrinopurulent, when fibrous septa form localized pus pockets; and the final organizing stage, when there is scarring of the pleura membranes with possible inability of the lung to expand. Simple pleural effusions occur in up to ...
They found that the fluid is made up of a high concentration of lactate dehydrogenase (LDH), protein and lymphocytes. In a healthy adult there is up to 50 ml of clear, straw-coloured fluid. [3] However, there is little data on the normal composition of pericardial fluid to serve as a reference. [4] [5]
Cyanosis is the change of body tissue color to a bluish-purple hue, as a result of decrease in the amount of oxygen bound to the hemoglobin in the red blood cells of the capillary bed. [1] Cyanosis is apparent usually in the body tissues covered with thin skin , including the mucous membranes , lips, nail beds , and ear lobes. [ 1 ]
The color of human blood ranges from bright red when oxygenated to a darker red when deoxygenated. [2] It owes its color to hemoglobin, to which oxygen binds. Deoxygenated blood is darker due to the difference in shape of the red blood cell when oxygen binds to haemoglobin in the blood cell (oxygenated) versus does not bind to it (deoxygenated).