Lights Criteria

The ratio of pleural fluid to serum protein is greater than 0 5.

Lights criteria. There are three rules in the light s criteria. A criteria used to distinguish the pleural exudates and transudates is called as the light s criteria. Pleural fluid protein total serum protein 0 5. It is the dedication of healthcare workers that will lead us through this crisis.

Pleural fluid ldh serum ldh 0 6. Effusion ldh serum ldh ratio is greater than 0 6 3. The rationale of this study was also to compare the usefulness of the new criteria with classical light s criteria. Using the patient s blood and the fluid in the effusion and comparing specific characteristic parameters medical practitioners can determine if the fluid is caused by internal pressure problems transudate or cellular leakage exudate.

Pleural effusion is the accumulation of fluid in between the parietal and visceral pleura called pleural cavity 2. After using multiple parallel tests the sensitivity specificity and accuracy of light s criteria for diagnosing exudates were 98 9 75 and 95 and those for transudates were 95 29 80 and 93 respectively. Light s criteria is used to classify pleural effusion as a transudate or exudate 1. Pleural fluid ldh 2 3 x upper limit of normal serum ldh.

The light s criteria for exudative effusions determines if pleural fluid is exudative. More recent studies have examined other characteristics of pleural fluid that may help to determine whether the process producing the effusion is local exudate or systemic transudate. The parameters input are checked against the above three rules by performing the necessary determinations. The fluid is considered an exudate if any of the following are present.

Light s criteria are more accurate for the diagnosis of exudative effusions. A fluid is said to be exudative if the 1. This is an unprecedented time. Mean arterial pressure map calculate map centor score modified for gas pharyngitis estimate likelihood of gas pharyngitis maintenance fluid calculations determine maintenance iv fluid rates ottawa chronic obstructive pulmonary disease risk scale ocrs guide admission vs discharge in copd exacerbation light s criteria determine whether a.

Light s criteria is a calculation that helps determine whether fluid within a body cavity called an effusion is caused by transudate or exudate. 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. Light s criteria are highly statistically sensitive for exudates although not very statistically specific.