The Light Criteria: The Beginning and Why they are Useful 40 Years Later.

Link to article at PubMed

The Light Criteria: The Beginning and Why they are Useful 40 Years Later.

Clin Chest Med. 2013 Mar;34(1):21-6

Authors: Light RW

Abstract
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.

PMID: 23411053 [PubMed - in process]

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