What does Transudate mean?

What does Transudate mean?

A transudate is a filtrate of blood. It is due to increased pressure in the veins and capillaries that forces fluid through the vessel walls or to a low level of protein in blood serum. Transudate accumulates in tissues outside the blood vessels and causes edema (swelling).

How is Transudate formed?

Transudates and exudates are formed within the mesothelial-lined body cavities. The classification as an exudate or transudate is made on the basis of the specific gravity, protein content, and other biochemical parameters of the body fluid itself.

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What does exudate mean in medical terms?

Exudate: A fluid rich in protein and cellular elements that oozes out of blood vessels due to inflammation and is deposited in nearby tissues. The altered permeability of blood vessels permits the passage of large molecules and solid matter through their walls.

Is ascites a transudate or exudate?

Ascitic fluid can accumulate as a transudate or an exudate. Amounts of up to 35 liters are possible. Roughly, transudates are a result of increased pressure in the hepatic portal vein (>8 mmHg, usually around 20 mmHg), e.g. due to cirrhosis, while exudates are actively secreted fluid due to inflammation or malignancy.

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Why is serous fluid important?

Another type of serous fluid is secreted by the serous membranes (serosa), two-layered membranes which line the body cavities. 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.