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The SAAG may be a better discriminant than the older method of classifying ascites fluid as a transudate versus exudate. [2] The formula is as follows: SAAG = (serum albumin) − (albumin level of ascitic fluid). Ideally, the two values should be measured at the same time.
Transudate vs. exudate. Transudate: Exudate: Main causes ↑ hydrostatic pressure, ↓ colloid osmotic pressure: Inflammation-Increased vascular permeability:
Transudate is extravascular fluid with low protein content and a low specific gravity (< 1.012). It has low nucleated cell counts (less than 500 to 1000 per microliter) and the primary cell types are mononuclear cells: macrophages, lymphocytes and mesothelial cells. For instance, an ultrafiltrate of blood plasma is transudate.
The Rivalta Test is a simple, inexpensive method that can be used in resource-limited settings to differentiate a transudate from an exudate. [1] It is a simple, inexpensive method that does not require special laboratory equipment and can be easily performed in private practice.
An exudate is a fluid released by an organism through pores or a wound, a process known as exuding or exudation. [1] Exudate is derived from exude 'to ooze' [ 2 ] from Latin exsūdāre 'to (ooze out) sweat' ( ex- 'out' and sūdāre 'to sweat').
The article is self-contradictory, listing serous transudate as a type of exudate and then saying that the two terms are different from one another. Bobsagat ( talk ) 23:37, 6 February 2010 (UTC) [ reply ]
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 [18] (e.g., due to cirrhosis), while exudates are actively secreted fluid due to inflammation or malignancy.
MDCalc is a free online medical reference for healthcare professionals that provides point-of-care clinical decision-support tools, including medical calculators, scoring systems, and algorithms. [1] MDCalc is also a mobile and web app. [ 2 ] The decision-support tools are based on published clinical research, [ 3 ] and MDCalc’s content is ...