Light’s criteria
1) Pleural fluid to serum protein ratio grater than 0.5
2) LDH to serum LDH greater than 0.6
3) pleural fluid LDH greater than 2-3s upper limit of normal serum LDH
Causes of exudative effusions
Renally protective diabetes drugs
SGLT2
Churg strauss clinical features
Chronic eosinophilic PNA
CSF protein with viral meningitis
normal to mildly elevated
cell differential in viral vs. bacterial meningitis
- bacterial = neutrophil predominant