Aug 15, 2018

🚩 Transudative pleural effusion is caused by which one of the following diseases?


a. Bacterial pneumonia

b. Malignancy

c. Cirrhosis

d. Sarcoidosis

e. Viral infection


Answer is c.

Transudative and exudative effusions can be distinguished by measuring the lactate dehydrogenase (LDH) and protein levels in the pleural fluid. Exudative effusions show a pleural fluid protein/serum protein greater than 0.5, pleural fluid LDH/serum LDH greater than 0.6, or pleural fluid LDH more than two-thirds normal upper limit for serum by these criteria. Only cirrhosis causes transudative effusions. Local factors contribute to exudative effusions in bacterial pneumonia, viral infections, malignancy, and sarcoidosis.

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