Transudate


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Transudate

 

an edematous fluid that collects in the body’s cavities as a result of disturbances in the circulation of blood or in the flow of lymph (such as ascites, or abdominal dropsy, in cases of cardiac insufficiency or cirrhosis of the liver). Transudation, in contrast to exudation, may take place without inflammation of the tissues.

References in periodicals archive ?
The classifications transudate and exudate refer to serous fluid.
Cholesterol levels were more than 60 mg/dl in cases of exudates whereas transudates have a cholesterol levels below 60 mg/dl.
Before each new implant was placed, coelomocentesis was performed and yielded 8 24 mL of a modified transudate. During the clinical course of the disease, the implants could be readily seen under the skin in the interscapular region.
The results of the present study reinforce the conclusions of reports which showed that albumin gradient is superior to transudate exudate concept in differentiating the causes of ascites.
Therefore, a frequent early step in the evaluation of pleural effusions is to classify them as transudates or exudates.
Present study demonstrates that the sensitivity, specificity, positive predictive value and negative predictive value were 98%, 87.5%, 98%, and 87.5% respectively when using Light s Criteria to differentiate exudate and transudate while the sensitivity, specificity, positive predictive value and negative predictive value were 100%, 100%, 100%, and 100% respectively when using pleural fluid cholesterol cutoff point >45 mg/dL to differentiate exudate and transudate.
Evaluation of different criteria for separation of pleural transudates from exudates.
Patients with chylothorax, pseudochylothorax, pleural effusion in the form of transudate and empyema were excluded: one patient with chylothorax had a history of prior trauma, in 1 patient with pseudochylothorax, it was detected that the patient had pleural fluid before the diagnosis of lung cancer, the content of fluid was intense in patients with empyema, pleural effusion in the form of transudate was related with additional diseases and was not related with lung cancer.
Several other studies agree with these findings.8-22 Some cases showed a low density ascitic fluid, however, it could be explained by an earlier stage of the disease characterised by a transudate. When looking at the overall sensitivity and specificity, these two findings can be strongly suggestive of peritoneal TB.
In addition, false-positive uptake might be encountered in I-131 WBSs by mechanisms such as metabolism of I-131-labeled thyroid hormones (liver uptake), retention and contamination of physiologic secretions and body fluids containing radioiodine (saliva, tears, sweat, urine, blood, exudate, transudate, gastric and mucosal secretions, etc.), uptake and retention of radioiodine in inflamed tissues.
Diagnosis of urinothorax requires high degree of clinical suspicion and can be established by biochemical analysis of pleural fluid, which is mostly consistent with a transudate, low pH (<7.40), and creatinine concentrations higher than those found in simultaneously obtained serum samples (pleural fluid/serum creatinine ratio >1.0) [1,2].
During tamponade, fluid will accumulate within the pericardial space, which can be transudate or pus, however the most common cause is bleeding (4).