Light S Criteria Pleural Effusion Uptodate

Light criteria for exudative pleural effusions may also be used to establish the presence of pericardial exudate patients with other etiologies of pericarditis.

Light s criteria pleural effusion uptodate.

Effusion ldh serum ldh ratio is greater than 0 6 3. Using a cutoff ada level of 30 units l the authors calculated a sensitivity of 94 percent specificity of 68 percent and positive. According to light s criteria light et al. 1 2 3 4.

Conclusions application of light s criteria not uncommonly misclassifies chf transudative effusions as exudates. An accurate diagnosis of the cause of the effusion transudate versus exudate relies on a comparison of the chemistries in the pleural fluid to those in the blood using light s criteria. A criteria used to distinguish the pleural exudates and transudates is called as the light s criteria. Effusion fluid serum protein ratio is greater than 0 5 2.

Lower in patients with hiv infection than in hiv uninfected patients 36 versus 52 percent. This is an unprecedented time. They are used to classify pleural effusions into an exudate or transudate when pleural fluid protein is 25 35 g l. Light s criteria determination of transudate versus exudate source of pleural effusion fluid is exudate if one or more of the following light s criteria is present.

In cases where no cause for an exudative effusion can be identified or chf is suspected the sequential application of the fluid ldh followed by the sf p and then the sf a gradients may assist in reclassifying pleural effusions. Light s criteria are nearly 100 percent sensitive at identifying exudates but approximately 20 percent of patients with pleural effusion caused by heart failure may fulfill the criteria for an. A fluid is said to be exudative if the 1. The light s criteria for exudative effusions determines if pleural fluid is exudative.

Pericardial effusion is not simply an ultrafiltrate of plasma and has higher concentrations of ldh and cells than expected by a simple transudate according to light s criteria. If applied pleural effusion criteria for transudate exudate will classify most normal pfs as exudate.