Journal
CLINICS IN CHEST MEDICINE
Volume 34, Issue 1, Pages 21-+Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.ccm.2012.11.006
Keywords
Light criteria; Pleural effusion; Transudative effusion
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The Light criteria serve as a good starting point in the separation of transudates from exudates. The Light criteria misclassify about 25% of transudates as exudates, and most of these patients are on diuretics. If a patient is thought likely to have a disease that produces a transudative pleural effusion but the Light criteria suggest an exudate by only a small margin, the serum pleural fluid protein gradient should be examined.
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