Pleural effusion in rheumatoid ahritis is typically associated with the following features except: (A) Glucose > 60 mg/dl, (B) Protein > 3 gm/di, (C) Pleural fluid protien to serum protein ratio of >0 .5, (D) Pleural fluid LDH to serum LDH ratio of >0.6
Answer is A. Ans. is 'a' i.e., Glucose > 60 mg/dl Causes of low glucose pleural fluid Malignancy Rheumatoid ahritis Empyema Hemothorax Paragonimiasis Churg strauss syndrome Lupus pleuritis (occasionally)